The Iran war and global trade: will the Cape route become the new normal?

Source: The Conversation – Africa – By Francois Vreÿ, Research Coordinator, Security Institute for Governance and Leadership in Africa, Stellenbosch University

Events in the Middle East during February and March 2026 again disrupted the flows of shipping trade to the eastern and western spheres of the international system.

Given that the global economy is maritime based and rests on secure and predictable flows of goods by sea, the armed attacks on Iran and their maritime spillovers sharply underlined the vulnerability of global maritime trade and its value, which is embedded in safe and predictable deliveries of goods in the interconnected global system.

Although armed attacks caught much of the attention, a more subtle development was playing out as shipping lines and insurers again contemplated the convenience of the Cape sea route around the southern tip of Africa.

Following the Israeli and US armed attacks on Iran, Tehran closed the Strait of Hormuz. The impact was severe disruption to global trade.

Military hostilities and insurance risk suspensions added to uncertainty and bottle-necked carriers inside and outside the Persian Gulf. This high-risk scenario again escalated the importance of the Cape sea route as a convenient alternative should hostilities widen. Iran, for example, also fired missiles towards Cyprus in the eastern Mediterranean while a US submarine sank an Iranian naval frigate in the Indian Ocean south of Sri Lanka.

Based on a widening of the conflict, it is possible that the events of March 2026 could mark a turning point in how the Cape sea route is seen. Dangerous confrontations that force shipping companies to sail along the route are increasing in frequency. Instead of simply being the standing default for diverting risks to global shipping in the north-western Indian Ocean, the route is rapidly becoming the new normal for shipping flows.

I have studied maritime security events off Africa for more than 15 years, and it appears to me that the constant re-routing now calls for less ad hoc decision-making about risks and opportunities. It calls for a rethink about how the route is viewed and managed. For example, it is in the interests of shipping companies, crews and stakeholders to ensure a safe alternative route around Africa that can also guarantee a good standard of shipping and delivery of goods.

That requires paying close attention to the risks associated with the route, and how they can be mitigated.




Read more:
African states don’t prioritise maritime security – here’s why they should


African countries, and particularly South Africa with its Atlantic and Indian Ocean ports and service hubs, must become partners in ensuring a sea route of choice amid a shifting and insecure global security landscape with its maritime spillovers.

The Cape route’s value in history

Until the inauguration of the Suez Canal in November 1869, the Cape sea route was the only viable route for maritime traffic sailing between the Atlantic and Indian Oceans and onwards to the Pacific Ocean.

The Suez Canal shortened the distance for shipping, but it wasn’t a perfect solution. In 1956, 1967 and 1973, Arab-Israeli Wars caused lengthy shutdowns of the Suez Canal.

After the 1967 war, the canal remained closed for about eight years, trapping commercial vessels in its waters. Later developments also disrupted shipping through the Suez Canal and the Red Sea.

Around 2008, sea piracy resurfaced as a dangerous threat to commercial shipping off the Horn of Africa. The arrival in 2008 of an international armada of an estimated 30-40 naval vessels operating under UN Resolution 1816 contained the threat. The intervention prevented the route through the Gulf of Aden and Suez Canal from becoming a piracy haven.

But shipping remained vulnerable and despite the naval deployment, shipping companies intermittently diverted large flows past the Cape.

During March 2021 the container vessel Ever Given blocked the Suez Canal for several days due to a combination of climatic conditions and human failure. This incident demonstrated that war and armed conflict are not the only risks to shipping in this region. Again, some shipping was diverted around South Africa.




Read more:
Houthi militant attacks in the Red Sea raise fears of Somali piracy resurgence


By 2024, in solidarity with the Palestinian cause, the Houthi rebel movement in Yemen began attacking selected commercial vessels passing through the southern Red Sea. Extensive attacks with missiles, drones and unmanned seaborne vessels again rerouted ships southward around the Cape of Good Hope.

This rerouting persisted for most of 2024. Shipping companies had to choose between:

  • risking Houthi missiles and drones

  • being escorted by naval vessels from the US, the UK and the EU

  • taking the Cape sea route.

It is estimated that as much as 66% of shipping sailed south along the Cape sea route at its height.

The Cape sea route 2026: the risks

Duration, costs, services and sea conditions add up to a different risk repertoire along the Cape route.

One risk is the extra loss of containers; sea conditions can be very rough around the tip of Africa. This carries heavy financial and environmental costs.

A second risk relates to support along the route, which adds up to 15 days to a journey. For example, there are limited deep sea salvaging capabilities on the route. South Africa used to be a salvage hub, but has abandoned those capabilities.




Read more:
Mozambique insurgency: focus needs to shift to preventing criminality at sea


A third set of risks are those that ships face if they enter an African harbour for unplanned reasons. There they stand exposed to dysfunctional service delivery and port inefficiencies.

All require implementing risk mitigation plans.

What needs to be done

The first plan should be extensive cooperation between African governments, their maritime agencies, and shipping companies. This remains the gold standard for building maritime security to contain non-traditional and non-naval threats along the route.

For example, there needs to be international cooperation for modernisation and port service delivery. These range from bunkering services to salvage assistance to collaboration on search and rescue services.

Responses do not solely depend on naval interventions. However, naval cooperation and roping in coast guards remain critical. This requires that African maritime agencies become better organised to secure the route to support safe global trade, including trade with Africa.

Derisking cannot be a solely South African responsibility. Maritime safety and security are about cooperation and partnerships. For the Cape sea route this implies African partnerships as well, intra-continental and with other international partners.

The Conversation

Francois Vreÿ received funding from the Friedrich Naumann Stiftung for Freedom in 2022 and 2023.

– ref. The Iran war and global trade: will the Cape route become the new normal? – https://theconversation.com/the-iran-war-and-global-trade-will-the-cape-route-become-the-new-normal-277582

Female writers and readers have been challenging the patriarchy for more than 200 years

Source: The Conversation – UK – By Roberta Garrett, Senior Lecturer in Literature and Cultural Studies, University of East London

Emerald Fennell’s film adaptation of Wuthering Heights has been pulling in the crowds recently, which is quite a feat in troubled times for cinema. Published in 1847, Emily Brontë’s tale of psycho-sexual power dynamics is just one of many enduring female-authored 19th century novels exploring female sexuality and desire for autonomy. These characters existed within a system that allowed women few education or career opportunities.

The ever-popular work of canonical British female writers such as Jane Austen, the (other) Brontë sisters and George Eliot were very different in style and tone. But they also draw attention to various forms of gender inequality.

Their novels focused on issues such as inheritance and property laws, the pressure on young women to marry for financial security, the sexual double standard and the lack of career prospects for women. In doing so, they gave voice to the frustrations of an expanding female readership in the 19th century.

The work of these and lesser-known female authors was crucial in shaping and fuelling public debates on what was referred to in the mid-Victorian period as “the woman question” (women’s right to vote). It later became the first-wave feminist movement in the late 19th and early 20th century.

The emergence of two inventive new literary forms in the early 20th century were key. One was modernism and the other the new printed paperback; both were intertwined with the expansion of women’s concerns and desires in the social and cultural sphere.

Modernism saw the burgeoning of experimental female writers such as Virginia Woolf and Jean Rhys in the 1920s. Then came popular genres such as mass market romance and what is now described as “cosy” crime fiction in the 1930s. Women writers and readers were creating spaces in high art and mass culture that centred female experience and domestic and personal life from the beginning of the 20th century.

The second wave

Given the importance of novels and reading to the history of feminist struggle, it is not surprising that second-wave feminism drew heavily on women’s literary heritage. This saw the publication of landmark academic studies of women’s writing such as Elaine Showalter’s A Literature of Their Own (1977), and Sandra Gilbert and Susan Guber’s The Madwoman in the Attic (1979). And with them came the proliferation of university courses on women’s writing.

The 1960s and 1970s also witnessed the birth of polemical feminist bestsellers. This included Germaine Greer’s The Female Eunuch (1970) and “consciousness raising” popular novels, such as The Woman’s Room (1977) by Marilyn French.

In the 1970s and 1980s, a more diverse group of feminist writers came on the scene. Writers like Margaret Atwood, Angela Carter, Alice Walker, Audre Lorde, Toni Morrison, Octavia Butler and Rita Mae Brown, continued to shape and expand the political and cultural scope and influence of women’s writing into queer, black and postmodernist forms.

Bookgroups, BookTok and the feminist novel

In our own era, while men are reading fewer and fewer novels, female writers and readers are keeping the world of fiction alive. Aside from being the major purchasers of fiction, women are far more likely to enhance and socialise their literary interests. Local book groups and online review and recommendation communities such as Booktok are popular spaces for exploring new literature.

They are also the driving force in the creation and consumption of successful new literary cycles. For example, one of the publishing success stories of the last ten years in English language fiction was the female-centred psychological thriller/domestic noir crime novel. This included the likes of Gone Girl (2014), The Girl on the Train (2016), Big Little Lies (2017) and The Housemaid.

As feminist literary critics have pointed out, not only are these novels predominantly written and narrated by women. Through widespread circulation and screen adaptations, they have also continued to bring to light key gender and power issues such as coercive control, domestic violence and the murder of women. At the lighter end of the spectrum, the recent explosion of “romantasy” fiction (a romance-fantasy hybrid) focuses on female desire and pleasure.

The boundary between literary and genre fiction is becoming increasingly blurred. But contemporary female writers such as Rachel Cusk, Bernadine Evaristo, Anna Burns and Eimear McBride continue to produce innovations in style and form. And younger female writers of “rage” and “sad girl” novels like Ottessa Moshfegh, Oyinkan Braithwaite, Rachel Yoder, Raven Leilani and Aria Aber are not afraid to explore edgy and unsettling accounts of women’s experience.

In life-writing, creative non-fiction and autofiction, women’s stories have also proliferated. Post #MeToo bestsellers such as Acts of Desperation (2022) by Meghan Nolan, and Three Women (2020) by Lisa Taddeo, tearing down comfortable myths of equality and exposing the persisting inequalities in women’s personal relationships.

For more than two centuries, women’s writing has not only reflected the constraints of patriarchy but actively challenged and reshaped them. As long as women continue to write, read and reimagine the world through fiction, novel reading will remain a vital site of feminist resistance and possibility.

This article features references to books that have been included for editorial reasons, and may contain links to bookshop.org; if you click on one of the links and go on to buy something, The Conversation UK may earn a commission.

The Conversation

Roberta Garrett does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. Female writers and readers have been challenging the patriarchy for more than 200 years – https://theconversation.com/female-writers-and-readers-have-been-challenging-the-patriarchy-for-more-than-200-years-276231

What Americans think of the war in Iran

Source: The Conversation – UK – By Paul Whiteley, Professor, Department of Government, University of Essex

The American people are bitterly divided over the conflict in Iran. The US president, Donald Trump, won office in 2024 after campaigning on a message of “no new wars”. So the conflict that began with airstrikes conducted with the Israeli military in the early hours of February 28, and which has quickly spread into the rest of the region, has polarised opinion across the country.

An Economist/YouGov poll completed on March 2 provides early information about what Americans think of the war so far. The poll asked the following question: “Would you support or oppose the US using military force to overthrow the government of Iran?”

There is a great deal of confusion about what the objectives of the war are, since the messaging from Trump, and his senior officials, has veered from preventing Iran from developing nuclear weapons, to destroying the country’s ballistic missile capability, to regime change.

But, from the point of view of polling, this is as good a question as any for finding out what Americans think. Altogether 32% of them support the war and 45% oppose it.

A divided society

The responses to this question analysed by gender, race, age and education appear in the graph. Those who were uncertain are not included in the totals.
The graph shows that large variations exist among the different groups in relation to their attitudes to the war.

The relationship between attitudes to the war and the
social backgrounds of respondents

The largest differences are in relation to race. Some 37% of white respondents support the war and 44% oppose it. In contrast 7% of black people support it and 60% oppose. Hispanics were in between these two, but rather closer to whites than to blacks.

The was a large gender difference in the responses as well with 37% of men in support but only 26% of women. A marked age difference existed too with only 21% of 18-to-29 year olds supporting and 50% opposed. At the same time some 40% of those over the age of 65 supported the war with 49% opposed. Finally, 34% of those without a college degree were in support compared with 27% with a college degree. Overall, young black women with a college degree were most likely to oppose the war, whereas older white men without a college degree were most in support.

A question of politics

The social backgrounds and attitudes to the war of respondents are interesting, but they are overshadowed by the polarisation of opinion among supporters of the political parties and ideological factions. These appear in the second chart.

The relationship between attitudes to the war and the
political affiliations of respondents

The striking feature of this chart is the difference between respondents who identify with the Democrats and those who identify with the Republicans. Only 8% of Democrats support the war compared with 64% of Republicans. The highest level of support comes from respondents who are Maga (Make American Great Again) supporters. No less that 75% of them support the war and only 10% oppose it.

There is similar polarisation among liberals, which refers to anyone on the left of the ideological spectrum in the US, and conservatives. Only 8% of liberals support the war compared with 66% of conservatives. Moderates are in between the two with 25% of them supporting and 50% opposing the war.

What it could mean for November’s mid-term elections

One theory of elections argues that individuals have a set of well-defined preferences over policies and so they support the party which is closest to them in relation to these policies. In this analysis, policy preferences are summarised by the left-right ideological dimension, or alternatively by the liberal-conservative dimension in politics.

In fact, it appears that in reality the reverse is true with voters choosing a party or leader and then changing their views to fit in with those of their newly adopted party. The 47th US president is an extreme case of this, because he constantly changes his mind. Before he was elected, he promised that the US would not get involved in any more wars in the middle east. It appears that most Republicans and nearly all the Maga supporters are quite willing to go along with the U-turn and agree with anything he does.

This is a big advantage for a president who is so polarising, since it means that he can rely on a body of loyal supporters even when they don’t know the latest policy changes. However, it is a weakness when it comes to elections because the Democrats and Independents together easily outnumber the Republicans and Maga supporters in the electorate.

The Cooperative Election Study, a large-scale survey conducted at the time of the presidential election in 2024 showed that 32% of respondents in their national survey identified with the Democrats, 27% with the Independents and 30% with the Republicans. In short, the Republicans are up against a coalition of Democrats and Independents who make up just under 60% of the voters. Add the factor that many Americans are outraged by the president’s behaviour and you have a winning coalition for the opposition in the mid-term elections.

Whatever happens in the war, Trump is unlikely to recover his popularity for the Republicans not to lose control of the House of Representatives – and possibly the Senate – in the mid-term elections in November.

The Conversation

Paul Whiteley has received funding from the British Academy and the ESRC.

– ref. What Americans think of the war in Iran – https://theconversation.com/what-americans-think-of-the-war-in-iran-277627

Ebo Taylor took highlife to the world and changed Ghanaian music forever

Source: The Conversation – Africa – By Eric Sunu Doe, Senior lecturer, University of Ghana

The news of the passing of Ghanaian highlife star Ebo Taylor on 7 February 2026 felt less like the loss of a public musical figure and more like the closing of a living chapter of Ghanaian musical knowledge. To many, he was a legendary guitarist, composer, arranger, and ambassador of Ghanaian highlife music.

Highlife music is a homegrown Ghanaian popular dance-music, believed to have emerged along the west African coast in the late 19th century. It fuses indigenous musical elements with those of the west. Several styles that characterise it include brass and regimental influenced adaha and its konkoma variants, guitar influence and the “swing” dance bands which were popular with the then emerging local elite. These styles have become the bedrock of today’s popular musical styles.

Ebo Taylor was a custodian of Ghanaian popular musical thought, of ensemble ethics (playing music in a group), and of what it meant to live inside music as a craft and community. His mentorship shaped my musical life as an ethnomusicologist and as a musician in the palmwine genre.

I first encountered him as part of the pioneering guitar class at the University of Ghana in the early 2000s. For the next few years he shaped how I played guitar, how I listened, how I arranged, and how I understood the responsibilities of being in a band. Much of what I do today in my highlife ensemble traces directly back to those encounters.




Read more:
Ghana’s politics has strong ties with performing arts. This is how it started


Who was Ebo Taylor?

Deroy Ebo Taylor’s life in music was inevitable and self-fashioned. He was born on 7 January 1936 in the city of Cape Coast in southern Ghana into a musical environment shaped by church and community music-making. His formal education revolved around music as practice, as his father was a known choirmaster and church organist.

By his late teens in Cape Coast, he was already involved in the dance band culture that would become the backbone of modern Ghanaian popular music. This was the time when “swing” dance band highlife was popular with many Ghanaians. Bands like the Stargazers Dance Band, the Broadway Dance Band and Tempos Dance Band would provide the sounds that shaped Ghana’s fight for independence. These sounds deepened his resolve to be a musician. He often told stories of how he would break school rules to watch or, later, perform with some of the local bands in Cape Coast.

His early music was shaped by the formal instruction he received from his father and his music teacher at secondary school (St Augustine’s College), as well as his peers and eventually the various bands he played in.

Taylor later deepened his theoretical and arranging knowledge through formal studies in London at the Eric Gilder School of Music in the early 1960s. That period placed him within a broader Black Atlantic musical conversation. It connected him to Ghanaian musicians who would later shape African popular music globally. These included saxophonist Teddy Osei and drummer Sol Amarfio, who were members of what would become the globally remowned Osibisa, and contemporaries like Nigerian music star and activist Fela Kuti, who were similarly navigating jazz, highlife and emerging African popular forms.

Highlife pioneer

When he returned to Ghana, he worked with bands, recording studios, and particularly the pioneering Ghanaian label Essiebons Records. It was with Essiebons that his creative genius became widely recognised by Ghanaians, as he contributed in shaping the sound that has become known as highlife from the 1970s. He worked with great Ghanaian musicians like Pat Thomas, C.K. Mann and Gyedu-Blay Ambolley.

His fingerprint could be heard on the songs he worked on, especially in his trademark guitar phrasing and tone, and in his horn arrangements. These included My Love and Music, Love and Death and Atwer Abroba. Some of these songs have been introduced to contemporary global audiences by being sampled by artists including the Black Eyed Peas, Jidenna, Kelly Rowland and Vic Mensa.

Scholars of highlife, including John Collins and Mark Millas Fish, have emphasised the centrality of arranger-bandleaders such as Taylor in shaping modern Ghanaian dance band music. His compositional practice, as I observed it, was quite casual with a deeper sense of reflection.

Taylor’s achievements were honoured domestically and globally. In 2014 he received a Lifetime Achievement Award.

Reflections of a mentee

For those of us who had the privilege of being his students, his greatest legacy was how he imparted knowledge to us. In his classes, he embraced us as the next generation of musicians who would be responsible for carrying the highlife tradition forward. He gave us an understanding of palmwine guitar, how to play the intricate rhythms with relative ease, and how to leave spaces for the voice to tell the stories that were meant to be told.

Today, I model my ensemble pedagogy around some of these ideals Ebo Taylor instilled in us and, as much as possible, I collaborate with professional musicians who come in to engage with my students when their time permits.

His passing marks the closing of yet another library. But we will continue to hear his voice in the numerous songs he shared with us and in those of us who are building on the knowledge he passed down.

The Conversation

Eric Sunu Doe does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. Ebo Taylor took highlife to the world and changed Ghanaian music forever – https://theconversation.com/ebo-taylor-took-highlife-to-the-world-and-changed-ghanaian-music-forever-276406

Choosing to buy organic food depends more on trust than taste – what our new study in the UK and Japan shows

Source: The Conversation – UK – By Steven David Pickering, Honorary Professor, International Relations, Brunel University of London

Akarawut/Shutterstock

Organic food is often presented as a healthier, greener or more ethical choice. But when people decide whether to pay extra for organic milk, eggs or vegetables, something else is going on.

Organic food belongs to a curious category that economists call “credence goods”. These are the products whose key qualities can’t be verified even after you’ve bought them. There’s no way that you can tell by looking at, tasting or cooking a food item whether it was genuinely produced to organic standards. Instead, you have to take it on trust.

That makes buying organic less about what’s on the plate and more about what’s going on in people’s heads.

When people pay more for organic food, they are effectively buying a promise: that production followed certain rules, that certification means something and that the system policing those rules is credible. Whether people are willing to pay that premium depends not just on how much the food costs or how much money they earn. It also depends on how much trust they place in the certification and regulatory system behind the label, and how comfortable they are paying more for something they cannot personally verify.

As part of our ongoing research into trust, we conducted two large surveys with around 1,300 respondents in Britain and 1,500 in Japan. We asked people whether they would be willing to pay more for organic versions of everyday foods such as dairy products, meat, eggs and vegetables.

We also asked a few simple questions about trust (both trust in government and trust in other people) as well as how willing respondents were, in general, to take risks.

radishes, jute bag of veg, handwritten chalkboard sign says 100% organic
People who trust the government are more willing to pay extra for organic food.
New Africa/Shutterstock

We got the same message back from both countries. In both the UK and Japan, people who trusted the government were more willing to pay extra for organic food. This was true regardless of whether the product was milk, eggs or vegetables, and regardless of age, gender, education or political views.

Willingness to take risks mattered too. People who described themselves as more comfortable taking risks were more willing to pay a premium for organic food. Paying more for something you can’t directly verify is, after all, a form of everyday risk taking.

Trust in other people (what social scientists call “generalised trust”) played a slightly different role. It mattered most when organic food was seen as reflecting personal values, such as environmental responsibility or ethical production, rather than having guaranteed quality.

Where Japan and the UK differ

Comparing results from the UK and Japan helps explain why trust plays such a pivotal role in these shopping decisions.

Japan’s organic certification system is centralised and state-led. Organic food is less common, but public trust in the government remains relatively high. In this context, institutional credibility is crucial. If consumers trust the state, they are more likely to trust the organic label it oversees.

In the UK, organic food is more widely available than in Japan, but certification is fragmented across government bodies and private organisations. Here, trust spreads outwards: confidence in other people, social norms and shared values plays a bigger role alongside institutional trust.

In both cases, however, the basic logic is the same. Organic labels work only when the system behind them is trusted. This has important implications at a time when food prices are rising and trust in public institutions is under pressure in many countries.

Promoting organic food is often framed as a matter of better information or clearer labelling. But our findings suggest that even perfect labels won’t persuade consumers if confidence in institutions is weak, or if paying more feels like too much of a gamble.

When trust erodes, ethical consumption becomes harder. This isn’t because people stop caring about sustainability or animal welfare, but because they stop believing the promises attached to higher prices.

Organic food, then, depends on trust. And without that trust, even the most well-intentioned labels will struggle to sell.

The Conversation

Steven David Pickering received funding from the UKRI’s ESRC (grant reference ES/W011913/1).

Yosuke Sunahara receives funding from the Japan Society for the Promotion of Science (JSPS, grant reference JPJSJRP 20211704).

Martin Ejnar Hansen does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. Choosing to buy organic food depends more on trust than taste – what our new study in the UK and Japan shows – https://theconversation.com/choosing-to-buy-organic-food-depends-more-on-trust-than-taste-what-our-new-study-in-the-uk-and-japan-shows-275163

Iran conflict: air campaigns rarely work as intended – they often make matters worse

Source: The Conversation – UK – By Matthew Powell, Teaching Fellow in Strategic and Air Power Studies, University of Portsmouth

The US and Israel have launched a coordinated air campaign in recent days to destroy Iran’s missile capabilities and navy, curb its ability to develop nuclear weapons and eliminate its leadership. The strikes have been accompanied by calls from Donald Trump for the Iranian people to rise up and overthrow their government.

In his statement announcing the start of the operation on February 28, Trump said: “When we are finished, take over your government. It will be yours to take. This will be probably your only chance for generations.” It is clear that Trump is hoping US and Israeli air power can weaken the regime in Tehran sufficiently for the Iranian people to finish the job themselves.

This approach has been criticised by some world leaders. British prime minister Keir Starmer, for instance, told MPs on March 2 that his government “does not believe in regime change from the skies”. And, in any case, history offers few examples in which an aerial bombing campaign aimed at enabling regime change has produced positive outcomes.

There are strategic benefits to using air power. It is inherently flexible in how it can be deployed, which allows for the escalation and deescalation of violence with greater ease than is possible with land or naval power. The speed and reach of air power also broadens the range of available military targets, while simultaneously reducing the need to expose troops to risk.

But air power has several limitations. Perhaps the main limitation is that, unlike ground forces, air power is unable to hold and secure territory that would allow for the consolidation of control. This was evident following the Libyan revolution in 2011, where a Nato air campaign supported a rebellion that overthrew the country’s ruler, Colonel Muammar Gaddafi.

Despite the initial success of the rebellion, Libya soon fell into chaos. Two main competing governments, supported by complex networks of militias, have spent the past decade or so vying for control. This has created a deeply divided, highly fragile state.

This is not to say putting western boots on the ground to help manage a transition would have led to a different outcome. Several years earlier, ground forces were unable to prevent Iraq from descending into civil war after the toppling of Saddam Hussein. But what is clear is that the deployment of air power alone was not sufficient to influence the political direction of Libya once Gaddafi had been removed.

Situation in Iran

The lesson from Libya is that fomenting a revolution when you have little ability to control how events play out on the ground can lead to unfavourable outcomes. This can be applied directly to the current situation in Iran.

As was the case in Libya, it is far from clear what will replace the government in Tehran should it fall. Iran’s opposition is fragmented and disorganised. Reza Pahlavi, the exiled son of Iran’s last shah, has positioned himself as a possible successor to the current leadership.

But the level of support for him within Iran is unclear. Surveys by the Gamaan group, an organisation that attempts to gauge political sentiment in Iran, suggest roughly one-third of people are strong supporters of Pahlavi and another third strongly oppose him.

With no unified opposition ready and able to enact a provisional government if the regime falls, the result is likely to be a power vacuum. This could possibly result in a civil war that further destabilises the region.

At the same time, there is no guarantee that the US-Israeli air campaign will encourage the Iranian people to topple their country’s leadership. Rounds of protests in recent years have been met with brutal repression by the authorities, with estimates suggesting tens of thousands of protestors were killed during the latest crackdown in January 2025.

It will remain a significant risk to protest against the Iranian regime, regardless of the damage that has been inflicted on the country’s leadership. Karoline Leavitt, the White House press secretary, said that “49 of the most senior Iranian regime leaders” had been “wiped off the face of the Earth” in the opening US-Israeli strikes.

The Iranian Revolutionary Guard Corps (IRGC), which operates parallel to Iran’s regular armed forces, exists solely to support the regime and answers directly to the supreme leader. It has upward of 190,000 troops under its command and is supported by the Basij paramilitary force, which claims it can mobilise around 600,000 volunteers.

Trump has threatened the IRGC and the Basij with certain death unless they lay down their arms. They are unlikely to take notice of these threats. However, if they do, there is effectively no one to accept their surrender – it is impossible to surrender to an aircraft tens of thousands of feet in the sky.

The removal of the regime in Tehran will be wished for by many across the globe. But there is no guarantee an air campaign will lead to its demise, nor is it clear that what follows will be any better. As Libya shows, what could follow the overthrow of the Islamic Republic is instability and chaos – a situation that could create more problems than it solves.

The Conversation

Matthew Powell does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. Iran conflict: air campaigns rarely work as intended – they often make matters worse – https://theconversation.com/iran-conflict-air-campaigns-rarely-work-as-intended-they-often-make-matters-worse-277319

El Ozempic y otros fármacos GLP-1 podrían combatir la adicción a todo tipo de sustancias

Source: The Conversation – (in Spanish) – By Ziyad Al-Aly, Clinical Epidemiologist, Washington University in St. Louis

Los medicamentos GLP-1, cada vez más accesibles y asequibles, también podrían estar al alcance de la mano si se demuestra su eficacia para el tratamiento del consumo de sustancias. Michael Siluk/Universal Images Group via Getty Images

Uno de mis pacientes, un veterano que había intentado dejar de fumar durante más de una década, me contó que, tras empezar a tomar un medicamento GLP-1 para su diabetes, perdió el interés por los cigarrillos. No utilizó parches. Tampoco eligió una fecha para dejarlo. Simplemente perdió el interés. Ocurrió sin esfuerzo.

Otro paciente que tomaba uno de estos fármacos para perder peso me explicó que el alcohol había perdido su atractivo, después de años de intentos fallidos por dejarlo.

Personas que luchan contra muchas adicciones, desde los opioides hasta el juego, están compartiendo experiencias similares en la consulta del médico, en las redes sociales y en las sobremesas familiares. Ninguno de ellos comenzó a tomar estos medicamentos para dejar de consumir.

Lo llamativo es que este patrón de personas que pierden sus ansias por una amplia gama de sustancias adictivas no tiene precedentes en la medicina.

El “ruido de la comida” desaparece

Las personas que toman medicamentos GLP-1 a menudo hablan de la desaparición del “ruido de la comida”; es decir, la constante charla mental sobre la comida que dominaba sus días se silenciaba. Es más, mis pacientes contaban que no se trataba solo de la comida: el interés por fumar, beber y consumir drogas, que hace que las personas vuelvan a caer a pesar de sus mejores intenciones de dejarlo, también se estaba silenciando.

Como médico cuyos pacientes suelen tomar medicamentos GLP-1, y como científico que trabaja para responder a cuestiones urgentes de salud pública, soy consciente de que muchas adicciones no tienen un tratamiento aprobado. Los pocos medicamentos que existen están muy infrautilizados y ninguno funciona con todas las sustancias. La idea de que un fármaco que ya toman millones de personas pudiera lograr lo que ningún otro tratamiento contra la adicción ha hecho antes es demasiado importante como para ignorarla.

Mi equipo y yo nos propusimos comprobar si los fármacos GLP-1, entre los que se encuentran el semaglutido (Ozempic y Wegovy) y el tirzepatido (Mounjaro y Zepbound), desarrollados originalmente para la diabetes y luego aprobados para la obesidad, podrían lograr lo que ningún tratamiento para la adicción existente consigue: frenar el deseo en sí mismo. Nuestras pruebas sugieren claramente que pueden hacerlo.

Los investigadores creen que los fármacos GLP-1 actúan sobre las áreas de recompensa del cerebro que son responsables de las ansias de comer.

Base biológica de las ansias

La hormona que imitan estos fármacos, el GLP-1, no solo se produce en el intestino. También está activa en el cerebro, donde los receptores a los que se une se agrupan en regiones que controlan la recompensa, la motivación y el estrés. Es decir, el mismo circuito que se ve secuestrado por la adicción.

En dosis terapéuticas, los fármacos GLP-1 atraviesan la barrera hematoencefálica y atenúan la señalización de la dopamina en el centro de recompensa del cerebro, lo que hace que las sustancias adictivas sean menos gratificantes.

Los fármacos GLP-1 parecen inhibir el deseo de consumir varias sustancias diferentes en múltiples modelos animales. Por ejemplo, los roedores a los que se les administran fármacos GLP-1 beben menos alcohol, se autoadministran menos cocaína y muestran menos interés por la nicotina. Cuando los investigadores administraron semaglutida a monos verdes vervet, unos primates que beben alcohol voluntariamente, los animales bebieron menos sin mostrar signos de náuseas ni cambios en la ingesta de agua. Esto sugiere que el fármaco redujo el valor de recompensa del alcohol.

De los animales a las personas

Para averiguar si estos fármacos tienen un efecto similar en las personas, recurrimos a los registros médicos electrónicos de más de 600 000 pacientes con diabetes tipo 2 del Departamento de Asuntos de Veteranos de Estados Unidos, una de las bases de datos sanitarias más grandes del mundo.

Diseñamos un estudio que aplicaba el rigor de los ensayos controlados aleatorios, el estándar de referencia en medicina, a datos del mundo real. Comparamos a las personas que comenzaron a tomar medicamentos GLP-1 con las que no lo hicieron, ajustando las diferencias en el historial médico, la demografía y otros factores. Y seguimos a ambos grupos durante tres años.

Mi equipo y yo nos planteamos dos preguntas. En primer lugar, en el caso de las personas que ya luchaban contra la adicción, ¿los medicamentos reducían las sobredosis, las hospitalizaciones relacionadas con las drogas y las muertes? Y en el caso de las personas sin antecedentes de trastorno por consumo de sustancias, ¿los fármacos GLP-1 disminuían el riesgo de desarrollar uno con todas las principales sustancias adictivas (alcohol, opioides, cocaína, cannabis y nicotina)?

Lo que descubrimos fue sorprendente. En el grupo que ya luchaba contra la adicción, hubo un 50 % menos de muertes por consumo de sustancias entre las personas que tomaban medicamentos GLP-1 en comparación con las que no los consumían. También encontramos un 39 % menos de sobredosis, un 26 % menos de hospitalizaciones relacionadas con las drogas y un 25 % menos de intentos de suicidio. En tres años, esto se tradujo en aproximadamente 12 eventos graves menos en total por cada 1 000 personas que tomaban medicamentos GLP-1, incluidas dos muertes menos.

Reducciones de esta magnitud son poco frecuentes en la medicina de las adicciones. Lo más notable es que el hallazgo proviene de medicamentos diseñados inicialmente para la diabetes, que luego se reutilizaron para la obesidad y que no fueron concebidos para tratar la adicción.

Ozempic para prevenir el desarrollo de adicciones

Los fármacos también parecían prevenir el desarrollo de la adicción desde el principio. Entre las personas sin antecedentes de trastorno por consumo de sustancias, las que tomaban fármacos GLP-1 tenían un 18 % menos de riesgo de desarrollar un trastorno por consumo de alcohol, un 25 % menos de riesgo de trastorno por consumo de opioides y aproximadamente un 20 % menos de riesgo de dependencia de la cocaína y la nicotina. En tres años, esto se tradujo en aproximadamente seis o siete nuevos diagnósticos menos por cada 1 000 usuarios de GLP-1.

Con decenas de millones de personas que ya utilizan fármacos GLP-1, la reducción de las muertes, las sobredosis, las hospitalizaciones y los nuevos diagnósticos podría traducirse en miles de eventos graves evitados cada año.

Evidencia convergente

Nuestros hallazgos coinciden con un conjunto cada vez mayor de pruebas.

Un estudio nacional sueco realizado con 227 000 personas con trastorno por consumo de bebidas alcohólicas reveló que quienes tomaban fármacos GLP-1 tenían un 36 % menos de riesgo de hospitalizaciones relacionadas con el alcohol. Esto supone más del doble de la reducción del 14 % que el mismo estudio encontró con la naltrexona, que era el medicamento más eficaz aprobado para el tratamiento del trastorno por consumo de alcohol en ese análisis. Otros estudios observacionales han relacionado los fármacos GLP-1 con menores tasas de trastornos por consumo de alcohol nuevos y recurrentes, menos diagnósticos y recaídas en el trastorno por consumo de cannabis, menos visitas al médico por dependencia de la nicotina y un menor riesgo de sobredosis de opiáceos.

Mientras tanto, los ensayos controlados aleatorios que evalúan directamente si estos fármacos ayudan a las personas con adicción también se muestran prometedores. En un ensayo, la semaglutida hizo disminuir tanto el deseo como la ingesta de bebidas alcohólicas en personas con trastorno por beber alcohol. En otro, la dulaglutida redujo su consumo. Hay más de una docena de ensayos adicionales ya en marcha o en fase de reclutamiento activo, y hay varios más previstos.

El futuro del tratamiento de las adicciones

Los fármacos GLP-1 son el primer tipo de medicación que muestra beneficios potenciales en múltiples tipos de sustancias simultáneamente. Y a diferencia de los medicamentos para la adicción existentes, que son recetados por especialistas y siguen estando muy infrautilizados, los medicamentos GLP-1 ya son prescritos a gran escala por los médicos de atención primaria. El sistema de distribución para llegar a millones de pacientes ya existe.

La consistencia de la eficacia del GLP-1 en el alcohol, los opioides, la cocaína, la nicotina y el cannabis sugiere que estos fármacos pueden actuar sobre una vulnerabilidad común subyacente a la adicción, y no sobre una vía específica de una sustancia concreta. Si se confirma, esto representaría un cambio fundamental en la forma en que la sociedad entiende la adicción y en cómo la tratan los médicos.

Sin embargo, aún quedan algunas preguntas sin respuesta sobre cómo afectarían estos compuestos a la adicción. Muchas personas que consumen fármacos GLP-1 para tratar la obesidad o la diabetes los dejan de tomar; después, su apetito suele volver y recuperan el peso que habían perdido. Se desconoce si se produciría el mismo efecto rebote con la adicción y qué significaría para una persona en recuperación enfrentarse de nuevo al torrente de ansias. Tampoco está claro si los beneficios persisten tras años de uso continuo o si el cerebro se adapta de forma que atenúa esos efectos.

Además, dado que los fármacos GLP-1 actúan sobre el circuito de recompensa del cerebro –que controla no solo el deseo, sino también la motivación diaria–, su uso prolongado podría, en teoría, atenuar la motivación en algunas personas. Si eso afectaría a la iniciativa, el espíritu competitivo o el rendimiento en el trabajo es algo que, de momento, ignoramos.

Las investigaciones cada vez más numerosas, así como los casos de éxito en la vida real, pintan un futuro brillante para el uso de los fármacos GLP-1 en el tratamiento de las adicciones.

¿Qué vendrá después?

Los fármacos GLP-1 no han sido aprobados para el tratamiento de la adicción y aún no hay pruebas suficientes para recetarlos únicamente con ese fin. Sin embargo, para millones de personas que ya están sopesando la posibilidad de empezar a tomar un fármaco GLP-1 para la diabetes, la obesidad u otra indicación aprobada, es un factor más que vale la pena tener en cuenta.

Un paciente con diabetes que también está tratando de dejar de fumar podría optar razonablemente por un fármaco GLP-1 en lugar de escoger otro medicamento para reducir la glucosa. No porque esté ya aprobado para dejar de fumar, sino porque puede ayudarle a dejarlo, un beneficio que otros compuestos terapéuticos para la diabetes no ofrecen. Y lo mismo se aplica a las personas con obesidad que también luchan contra el alcoholismo.

Si ensayos adicionales confirman que su capacidad para reducir eficazmente el deseo de consumir sustancias adictivas, estos fármacos podrían empezar a cerrar una de las brechas terapéuticas más importantes de la medicina. Y el avance más prometedor en materia de adicciones en décadas no habrá surgido de una búsqueda deliberada, sino de pacientes que informan de un beneficio que nadie había previsto.

The Conversation

Ziyad Al-Aly recibe fondos del Departamento de Asuntos de Veteranos de Estados Unidos.

– ref. El Ozempic y otros fármacos GLP-1 podrían combatir la adicción a todo tipo de sustancias – https://theconversation.com/el-ozempic-y-otros-farmacos-glp-1-podrian-combatir-la-adiccion-a-todo-tipo-de-sustancias-277635

How the Iran war could create a ‘fertiliser shock’ – an often ignored global risk to food prices and farming

Source: The Conversation – Global Perspectives – By Nima Shokri, Professor, Applied Engineering, United Nations University

Tehran is moving to restrict – or effectively close – the Strait of Hormuz to shipping, as part of the latest escalation in the war involving Iran.

Markets have reacted to the global impact of closing this incredibly busy shipping channel, focusing on the risk to oil and gas flows, the prospect of higher crude prices and the inflationary pressures that would follow.

That concern is justified. But it captures only part of the story. A sustained disruption of traffic through Hormuz would not simply constitute an energy crisis. It would also represent a fertiliser shock (where prices go up dramatically and supply goes down) – and, by extension, a direct risk to global food security.

Modern agriculture runs not only on sunlight and soil, but on natural gas. When German chemists Fritz Haber and Carl Bosch developed their nitrogen fixation method in the early 20th century, they did more than just manufacture ammonia at scale.

They launched a global chemical revolution that remains a cornerstone of modern civilization and agriculture. Through this process, methane is transformed into ammonia, and ammonia into nitrogen fertilisers such as urea – the most widely used nitrogen fertiliser. Those fertilisers allow crops to reach the yields on which today’s global population depends. Without it, harvests of wheat, maize and rice would fall dramatically.

Around a third of globally traded urea passes through the Strait of Hormuz. The Persian Gulf sits at the centre of this system for two structural reasons. First, it offers access to some of the world’s cheapest natural gas, essential for ammonia production.

Second, over decades, vast capital investments have built ammonia and urea capacity in countries within the region, including Qatar, Saudi Arabia, and the United Arab Emirates. This is aimed at the export market. A significant share of globally traded nitrogen fertiliser – and the liquefied natural gas (LNG) that powers fertiliser plants elsewhere – must therefore travel through the Strait of Hormuz. A closure of the strait would threaten not only oil and gas exports but also the physical flow of nitrogen-based fertilisers and what is needed to make them.

The immediate effect would be delays to shipments of ammonia, urea and LNG. They could be stopped completely or become prohibitively expensive through higher freight and insurance costs. But the deeper impact would unfold in the months ahead at farms around the world.

A tractor spreading fertiliser in a wide open field.
Farmers stocks of essential fertiliser may soon be depleted because of the Iran war.
Fotokostic/Shutterstock

In the northern hemisphere, fertiliser purchases accelerate before planting seasons. A delay of weeks can be disruptive; a disruption of months can make a huge difference. If shipments fail to arrive on time, farmers face difficult choices such as how to pay sharply higher prices, reduce application rates, or alter crop mixes. Because of how crops respond, even modest reductions in nitrogen use can produce disproportionately large declines in yield. That could translate into millions of tonnes of lost crops. The consequences would ripple through global supply chains into feed markets, livestock production, biofuels and ultimately retail food prices.

Do countries not have their own supplies?

Some countries have supplies of fertilisers, but self-sufficiency is rarer than it appears. India, for instance, relies heavily on LNG imports from the Persian Gulf to run its domestic urea plants. Brazil depends substantially on imported nitrogeon and phosphate fertilisers to sustain soybean and maize production.

Even the United States, one of the world’s largest fertiliser producers, imports meaningful volumes of ammonia and urea to help meet regional demand and reduce prices. In sub-Saharan Africa, use of fertiliser is already low. A further rise in prices is likely to reduce use even more, cutting yields and increasing food insecurity.

The system’s fragility extends beyond nitrogen. Sulphur – as an essential nutrient for plant growth – is largely a byproduct of oil and gas processing. If energy shipments through Hormuz are disrupted, sulphur output falls alongside fuel exports. So, the shock would not only reduce fertiliser shipments but also restrict ways to produce them elsewhere.

Meanwhile, the production of synthetic nitrogen tightly coupled to energy markets because it is manufactured continuously from natural gas. A disruption in gas supply or ammonia trade immediately constrains global nitrogen availability. Estimates suggest that without synthetic nitrogen, the world could feed only a fraction of its current population. The Strait of Hormuz therefore sits at the intersection of energy and food security.

Changing where fertiliser is produced cannot happen overnight. Financing and constructing new ammonia plants takes years. A double-digit contraction in exports from a key region cannot be swiftly offset. In the interim, prices would rise, trade flows would re-route and planting decisions would be made under uncertainty. Food price inflation, historically correlated with social unrest, could intensify.

Central banks, focused primarily on fuel-driven inflation, could underestimate the contribution of fertiliser scarcity to prices overall. Crucially, fertiliser shocks do not register with the same immediacy as oil shocks. Petrol prices change overnight. Crop yields reveal themselves months later. Yet the latter may prove more destabilising.

Controls and closure of this narrow maritime chokepoint would reshape the cost-of-living well beyond the Persian Gulf.

If the 20th century taught policymakers to fear oil embargoes, the 21st should teach them to fear a fertiliser shock. Energy markets can absorb shocks through reserves and substitution. But the global food system has far thinner buffers. A prolonged disruption at Hormuz would not simply reprice crude; it would test the resilience of the industrial nitrogen cycle on which modern civilisation depends.

Oil powers cars. Nitrogen powers crops. If the Strait of Hormuz closes, the most consequential price may not be Brent crude but the cost of feeding the world.

The Conversation

Nima Shokri is affiliated with Hamburg University of Technology.

Salome M. S. Shokri-Kuehni does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

– ref. How the Iran war could create a ‘fertiliser shock’ – an often ignored global risk to food prices and farming – https://theconversation.com/how-the-iran-war-could-create-a-fertiliser-shock-an-often-ignored-global-risk-to-food-prices-and-farming-277552

What the conflict in Iran means for Putin and Ukraine

Source: The Conversation – UK – By Stefan Wolff, Professor of International Security, University of Birmingham

As the war in the Middle East spreads and intensifies, the one in Ukraine continues. While geographically some 2,500km (1,600 miles) apart, the consequences of US president Donald Trump’s latest military adventure for the Russian war against Ukraine will be acutely felt across several areas. In the short term, the Kremlin will probably feel emboldened to double down on its aggression, but this is unlikely to shift the dial significantly towards Russian victory in the long term.

The targeted killing of Iranian supreme leader Ayatollah Ali Khamenei by a precision US strike would have reminded the Russian president, Vladimir Putin, of his reportedly “apoplectic” reaction to the killing of the Libyan leader, Muammar Gaddafi, in 2011. Comments on social media from the likes of far-right Russian nationalist Alexander Dugin, who posted, that “one by one, our allies are being systematically destroyed”, and former Russian president Dmitry Medvedev, who alleged that the “talks with Iran were just a cover”, are unlikely to have steadied Putin’s nerves.

The Russian leader’s fears about being next after a string of US successes targeting foreign leaders may have been played up somewhat by the western media, but they are not completely unfounded. Putin continues to walk a fine line between paranoia and his outrage over the killing of supreme leader Ali Khamenei, which he condemned in a condolence letter to the Iranian president, Masoud Pezeshkian, as a “cynical violation of all norms of human morality and international law” but did not mention Trump or the US as the culprits.

Concerns about his own longevity, however, will not be the only things weighing on Putin’s mind and compelling him to double down on his war against Ukraine. The escalation of violence in the Middle East offers Russia several opportunities – at least in the short term.

The sharp rise in oil prices throws Moscow a new lifeline for financing its ongoing war. Not only did prices spike, but the sudden – and probably lasting – inability of Iran to export oil will also have a major impact on China. China bought over 80% of all Iranian oil exports, equivalent to some 13% of China’s oil imports.

China has large stockpiles of oil that will allow it to ride out current inflation. But it is now likely to double down on its energy relationship with Russia.

This will serve both countries well. Russia will deepen its economic ties with China and rebalance the relationship, while China will tap into a reliable supply line that will not be as vulnerable to being choked off as maritime supply routes in a future confrontation with the US.

The closure of the strait of Hormuz and Iranian strikes against oil and gas facilities across the Gulf countries have destabilised global energy markets. This affects 30% of global seaborne oil trade and 20% of all trade in liquefied natural gas.

This offers a market opportunity for Russia and its shadow fleet of tankers, at least in the short term, given that Moscow retains sufficient refining and port capacity, despite a long Ukrainian air campaign against the country’s oil infrastructure.

US diverting arms to Middle East

Another likely benefit for the Kremlin will be disruptions to weapons supplies to Ukraine. While insisting that the US had “virtually unlimited supply” of weapons and munitions, Trump also conceded that there were areas “at the highest end, (where) we have a good supply, but are not where we want to be”.

This is a view echoed within the Pentagon. Defence officials are keen to discuss an acceleration of weapons production with key arms manufacturers.

With large parts of western military support for Ukraine consisting of US weapons paid for by Kyiv’s European allies, US shortages will immediately affect the flow of vital equipment to Ukraine. Even deliveries already agreed could be derailed. In June 2025, during the so-called 12-day war with Iran, the US diverted some 20,000 missiles from Ukraine to the Middle East.

Russia is unlikely to face any similar constraints. On the contrary, a Russian-Iranian deal in late 2022 enabled Moscow to acquire technology from Tehran that allowed the Kremlin to kick-start domestic drone production based on the Iranian Shahed design. Not only has Russia improved the drones, it now also produces them faster and cheaper than Iran ever did.

If western military supplies to Ukraine now dry up even temporarily as a result of an increased focus of the US on the Middle East, Russia’s air superiority and the devastating impact its relentless campaign of missile and drone strikes has had on Ukraine is likely to continue for some time.

At the same time this drives home the point that dependence on the US puts Ukraine and its European allies in an unacceptably precarious position. Ukraine’s own defence industry already meets half of the country’s needs, and the fallout from Iran war will probably further accelerate homegrown military production and innovation across Europe as the traditional US-European alliance frays.

Transatlantic relationships fraying

In the short term, transatlantic decoupling will serve Moscow’s interests more than Kyiv’s. European countries, including the UK, France, and Spain, have been critical of US and Israeli attacks on Iran, earning them the expected rebukes from Trump.

The White House might be too busy to follow through on threats “to cut off all trade” with Spain, but it will equally not put much effort into already fraught mediation efforts between Russia and Ukraine. Given the dismal performance of Trump’s own efforts and those of his negotiation team, as well as the pressure that the US had put on Ukraine rather than Russia to cut a deal, this may not be much of a loss.

But US diplomatic disengagement from the Russian war against Ukraine still poses a problem. The US is the only country with the leverage to bring both sides together and – if Trump were to decide so – achieve a just and sustainable peace agreement.

Ukraine and its European partners may be able to prevent a Russian victory, but it will take some time for them to develop the military and political muscle to force Russia to make meaningful concessions that could pave the way towards a settlement.

If nothing else, Trump’s war of choice in the Middle East will be another factor in prolonging the war against Ukraine. Regardless of its short-term effects, it will not make a Russian victory more likely. But it has thrown the world into additional turmoil for no good reason, and it will delay the much-needed restoration of peace in Europe.

The Conversation

Stefan Wolff is a past recipient of grant funding from the Natural Environment Research Council of the UK, the United States Institute of Peace, the Economic and Social Research Council of the UK, the British Academy, the NATO Science for Peace Programme, the EU Framework Programmes 6 and 7 and Horizon 2020, as well as the EU’s Jean Monnet Programme. He is a Trustee and Honorary Treasurer of the Political Studies Association of the UK and a Senior Research Fellow at the Foreign Policy Centre in London.

– ref. What the conflict in Iran means for Putin and Ukraine – https://theconversation.com/what-the-conflict-in-iran-means-for-putin-and-ukraine-277298

Le télétravail peut-il vraiment réduire nos émissions de CO₂ liées à la mobilité ?

Source: The Conversation – France (in French) – By Bérangère Legendre, Professor, Université Savoie Mont Blanc

En France, aujourd’hui, plus d’un salarié du secteur privé sur cinq télétravaille au moins une fois par mois.
Chris Montgomery/Unsplash, CC BY

Intuitivement, la généralisation du télétravail ne peut qu’avoir certainement un effet bénéfique sur nos émissions de gaz à effet de serre, mais, lorsqu’on examine les chiffres, cela se révèle moins probant.


Télétravailler pour réduire son empreinte carbone : l’idée semble évidente. Moins de trajets domicile-travail, moins de voitures sur les routes, donc moins d’émissions. Cette intuition a largement accompagné l’essor du télétravail depuis la crise sanitaire.

En France, plus d’un salarié du secteur privé sur cinq télétravaille aujourd’hui au moins une fois par mois. Ils n’étaient que 4 % avant la crise sanitaire. Or, les trajets entre le domicile et le travail représentent une part importante des émissions de gaz à effet de serre liées aux déplacements. Entre 1999 et 2019, la distance entre le domicile et le travail a augmenté en France, en particulier pour les habitants des zones rurales. Près du trois quarts de ces trajets se font en voiture, et cette part dépasse 90 % dans les zones peu denses. En moyenne, en 2019 un salarié émettait donc environ 700 kg de CO₂ par an pour ses seuls déplacements domicile-travail, et jusqu’à 1,3 tonne pour les personnes qui se déplacent le plus.

Dans ce contexte, le télétravail pourrait apparaître donc comme une solution évidente : en supprimant une partie de ces déplacements, les émissions devraient mécaniquement diminuer. Mais cette logique suppose que le télétravail n’affecte que les trajets entre le domicile et le travail, sans modifier les autres comportements de mobilité, ce qui est loin d’être évident.

Du côté des chiffres

Pour mieux comprendre ces dynamiques, nous avons mené une grande enquête entre décembre 2022 et février 2023 auprès de 3 530 actifs français, qui ne télétravaillaient pas avant la crise sanitaire. Une partie d’entre eux est passée au télétravail après 2020, ce qui permet de comparer leurs comportements de mobilité avant et après cette transition.

À première vue, les résultats semblent sans appel. Les télétravailleurs émettent moins d’équivalent CO₂ pour leurs déplacements entre le domicile et le travail : environ – 34 % pour les trajets directs et – 26 % lorsque l’on inclut les détours quotidiens (courses, accompagnement des enfants, etc.). À l’échelle de l’ensemble des mobilités (hors avion), leurs émissions annuelles apparaissent également plus faibles, de l’ordre de – 12 %.

Pris tels quels, ces chiffres pourraient suffire à conclure que le télétravail est bénéfique pour le climat. Pourtant, cette lecture est incomplète, et potentiellement trompeuse.

Pourquoi comparer télétravailleurs et non-télétravailleurs ne suffit pas

Déjà, il faut noter que les télétravailleurs ne sont pas des travailleurs « comme les autres ». Ils occupent plus souvent des emplois qualifiés, résident dans des zones spécifiques, ont des revenus plus élevés et des contraintes de mobilité différentes. Autrement dit ils n’auraient pas nécessairement eu les mêmes émissions que les non-télétravailleurs, même sans télétravail.

Comparer directement ces deux groupes revient donc à confondre potentiellement l’effet du télétravail avec des différences préexistantes. Pour isoler l’effet propre du télétravail, il faut raisonner en termes d’analyse d’impact : comparer ce qui s’est effectivement produit à un scénario de référence crédible, dans lequel les mêmes individus n’auraient pas télétravaillé.

Un effet réel mais plus modeste qu’il n’y paraît

Une fois cette approche mise en œuvre, le diagnostic se nuance. Le passage au télétravail, tel qu’il s’est opéré en France entre 2020 et 2023, a entraîné une baisse des émissions liées aux déplacements domicile travail, de l’ordre de 400 kg de CO₂ par an pour les personnes télétravaillant au moins deux jours par semaine. Cet effet est robuste et s’explique directement par la réduction du nombre de trajets.

En revanche, cette baisse est en partie compensée par d’autres ajustements : légère hausse des déplacements privés, réorganisation des trajets dans la semaine, ou encore disparition de certains « détours » auparavant intégrés au trajet domicile-travail. Ces effets, appelés « effets rebond » ne suffisent pas à annuler totalement les gains, mais ils en réduisent l’ampleur.

Le télétravail, un levier utile pour réduire l’empreinte carbone liée à la mobilité, mais un levier limité

Au final, le télétravail a réduit les émissions liées à la mobilité, mais dans des proportions plus modestes que ce que l’intuition initiale laisse penser. Rapporté à l’empreinte carbone moyenne d’un Français, et sachant que tous les travailleurs ne télétravaillent pas, l’effet reste limité.

Par ailleurs, si l’enquête dont sont issus ces résultats permet de renseigner finement les habitudes hebdomadaires de mobilité et l’organisation du travail d’un échantillon représentatif de la population en emploi en France, elle n’intègre pas d’autres effets qui méritent tout autant l’attention des chercheurs : l’empreinte carbone de l’usage du numérique en situation de télétravail, ou encore les comportements de consommation d’énergie à domicile et au travail des salariés.

Faut-il en conclure que le télétravail est inutile pour le climat ? Pas nécessairement. Mais ces résultats invitent à dépasser une vision simpliste.

La question n’est pas seulement de savoir si le télétravail réduit les émissions, mais dans quelles conditions il peut réellement le faire. En effet, il est important de s’intéresser également aux mécanismes économiques de long terme qui sont à l’œuvre. C’est précisément ce que permet la modélisation théorique en économie : simuler l’ajustement de l’économie lorsque de profonds changements interviennent.

Télétravail et arbitrages sur le marché du travail

Sur le marché du travail, les individus arbitrent entre le salaire proposé et les coûts associés à l’emploi, au premier rang desquels figurent les coûts de mobilité. Plus un emploi est éloigné du domicile, plus les coûts de mobilité sont élevés, ce qui peut dissuader certains travailleurs d’accepter certaines offres d’emploi.

Le télétravail modifie donc profondément les arbitrages des travailleurs. En réduisant le nombre de jours de déplacement, il diminue le coût de mobilité associé à un emploi donné. Cela permet à certains travailleurs d’accepter des emplois plus éloignés, qu’ils n’auraient pas acceptés autrement, et améliore l’accès à l’emploi pour les personnes vivant loin des centres d’activité.

Du point de vue de l’emploi, cet effet est donc théoriquement positif. Du point de vue environnemental, il est ambigu : accepter des emplois plus éloignés peut conduire à des distances domicile-travail plus longues les jours de présence sur site.

Une segmentation spatiale des travailleurs

Le télétravail induit donc une segmentation géographique. Les travailleurs vivant loin des centres d’emploi sont plus enclins à accepter des postes offrant du télétravail, tandis que ceux vivant à proximité continuent plus souvent à travailler sur site.

Cette segmentation a un double effet. D’un côté, elle concentre le télétravail chez les travailleurs pour lesquels la réduction des déplacements est la plus importante en termes de kilomètres évités. De l’autre, elle modifie la répartition spatiale des travailleurs et influence les comportements de mobilité de l’ensemble de la population active.

Peu de travaux ont pour l’instant documenté les mobilités résidentielles liées au télétravail en France. En 2022, les économistes Marie‑Laure Breuillé, Julie Le Gallo et Alexandra Verlhiac ont cependant montré que le télétravail tendait à accentuer certaines tendances de migrations des villes vers les campagnes grâce à la flexibilité offerte par le télétravail.

Un effet rebond inattendu : le choix du véhicule

Un autre mécanisme, moins intuitif, concerne le choix du type de véhicule. Si les véhicules électriques coûtent cher à l’achat, leur utilisation au quotidien est moins onéreuse : charger son véhicule électrique coûte moins cher que faire le plein d’une voiture thermique. Les véhicules électriques deviennent donc rentables au-delà d’un certain nombre de kilomètres parcourus.

En réduisant la fréquence des déplacements domicile-travail, le télétravail peut faire passer certains travailleurs en dessous de ce seuil de rentabilité. Résultat : l’adoption des véhicules électriques peut ralentir chez certains télétravailleurs, ce qui constitue un effet rebond susceptible de réduire les gains environnementaux attendus.

Intensité du télétravail : un facteur clé

Les simulations issues des modèles montrent également que l’impact environnemental du télétravail dépend fortement de l’intensité à laquelle il est pratiqué. Un scénario dans lequel une grande proportion de travailleurs télétravaille un seul jour par semaine n’est pas nécessairement le plus favorable.

À l’inverse, une part plus réduite de travailleurs télétravaillant deux ou trois jours par semaine peut conduire à des réductions d’émissions plus importantes. Autrement dit il vaut parfois mieux peu de télétravailleurs faisant beaucoup de télétravail que beaucoup de télétravailleurs en faisant peu.

Télétravail et politiques climatiques : des interactions décisives

Enfin, le télétravail n’agit pas isolément. La modélisation théorique permet de simuler l’impact du télétravail dans un contexte où sont menées des politiques environnementales qui ne sont pas actuellement en place : que se passerait-il dans une économie avec une taxe carbone respectant la trajectoire du prix du carbone initialement prévue par le rapport Quinet ? Dirigé par l’économiste Alain Quinet pour France Stratégie, ce document de référence fixe une valeur de long terme au carbone afin d’aider l’État, les entreprises et les citoyens à orienter leurs choix vers des solutions compatibles avec la lutte contre le changement climatique.

Cette valeur donne donc une trajectoire de long terme, une référence scientifique sur laquelle s’appuyer pour fixer par exemple le niveau d’une taxe carbone compatible avec des objectifs de neutralité carbone. En France, la taxe carbone actuellement en vigueur n’a pas évolué depuis le mouvement des gilets jaunes (2018-2019), elle est donc inférieure à la trajectoire identifiée par le rapport Quinet.

Que se passerait-il en particulier si les recettes d’une telle taxe étaient reversées à la population sous forme de subvention à l’adoption du véhicule électrique ?

Dans ce contexte, une politique climatique ambitieuse peut réduire l’effet marginal du télétravail sur les émissions. Mais le télétravail peut aussi améliorer l’acceptabilité sociale de ces politiques, en réduisant la part du revenu consacrée aux coûts de transport, en particulier pour les travailleurs les plus éloignés des centres d’emploi.

Penser le télétravail comme un outil parmi d’autres

Le télétravail peut donc contribuer à la décarbonation des mobilités, mais seulement sous certaines conditions : intensité suffisante, articulation avec les politiques de mobilité et prise en compte des effets rebond.

La question n’est donc pas de savoir si le télétravail est bon ou mauvais pour le climat, mais comment l’intégrer intelligemment dans une stratégie plus large de transformation des mobilités et de l’organisation du travail.

The Conversation

Bérangère Legendre a reçu des financements de la chaire de l’économie environnementale (CLEE).

Sarah Le Duigou ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’a déclaré aucune autre affiliation que son organisme de recherche.

– ref. Le télétravail peut-il vraiment réduire nos émissions de CO₂ liées à la mobilité ? – https://theconversation.com/le-teletravail-peut-il-vraiment-reduire-nos-emissions-de-co-liees-a-la-mobilite-276989