US force has been used against drug traffickers before – but Trump’s plan is a dangerous escalation

Source: The Conversation – UK – By Luca Trenta, Associate Professor in International Relations, Swansea University

The US president, Donald Trump, signed a secret directive on August 8 authorising the Pentagon to use military force against some Latin American drug cartels. To longtime observers of US foreign policy in the region, his directive only came as a partial surprise.

During his most recent presidential election campaign, Trump proposed bombing Mexico – although, amid the flurry of claims and promises, this extreme posture almost went unnoticed. And Mexican national security analysts have been warning for the past few years that use of US military force against Mexico is becoming increasingly likely.

On his first day back in office, Trump signed an executive order designating cartels and some other criminal groups “foreign terrorist organisations”. For past US administrations, such a designation has often acted as a prelude to – and partial justification for – violence.

Trump’s executive order defined cartels as a “national security threat beyond that posed by traditional organised crime”. This, it added, is due to the cartels’ work with international networks, their complexity and engagement in insurgency and asymmetric warfare, and their “infiltration” of governments in the western hemisphere.

In its report on Trump’s secret directive, the New York Times highlighted how the unilateral use of military force in Latin America would represent a dangerous escalation in the region.

In the past, the US has often presented its use of military force against the cartels as support for law enforcement there. It has also relied on collaboration with local governments and militaries to conduct joint operations.

Brian Finucane, a former legal adviser at the US State Department, noted in the same New York Times article that any use of force would encounter domestic constraints in Washington. It would need congressional authorisations, and the US government is formally banned from attempting assassinations. This ban could only be circumvented, Finucane argued, in cases of self-defence.

However, at least since the 1980s, the ban on assassination has rarely constrained US foreign policy. The so-called “war on drugs” of successive administrations has often blended overt and covert uses of force, culminating in the killing of prominent drug traffickers.

Justifying assassination

The use of force and assassination featured in the first war on drugs, declared by then-US president Richard Nixon in 1971. Journalists working on the Watergate scandal, an investigation into the administration’s involvement in a break-in at the Democratic National Committee headquarters in Washington, revealed that Nixon and his assistants had considered using hit squads and the assassination of 150 leading drug traffickers.

But the self-defence exception first emerged under the administration of Ronald Reagan (1981–1989). The CIA’s then-director, William Casey, and its legal counsel, Stanley Sporkin, both argued that the ban on assassinations did not apply in cases of self-defence. Their argument found support in an administration that was developing a rhetoric and policies to pre-empt terrorism, similar to those established in the aftermath of 9/11.

In 1989, early in the George H.W. Bush administration, this precedent was enshrined in a memorandum of law: the Parks Memorandum. This stated that overt or covert uses of force ordered by the president in self-defence would not constitute assassination if they targeted “combatant forces of another nation, a guerrilla force or a terrorist, or other organisations whose actions pose a threat to the security of the US”.

By this time, drug trafficking had replaced terrorism as a key security concern in the US, and Medellín Cartel leader Pablo Escobar was enemy number one. In April 1989, the CIA established a counter-narcotics centre, and the National Security Council soon started working on a policy review on how to deal with drug traffickers.

Assassination and the use of force emerged as clear policy options. William J. Bennett, then chief of the Drug Enforcement Administration (DEA), was a strong advocate of going after narcotraffickers. Bennett seemed to support the use of hit squads when he stated that same year: “We should do to the drug barons what our forces in the Persian Gulf did to Iran’s navy [during the Iran-Iraq war in the 1980s].”

Bush Sr also went back to another precedent set under Reagan. Starting in the mid-1980s, the Reagan administration had argued that a “marriage of convenience” had emerged between terrorists and drug traffickers. “Narcoterrorism”, then-secretary of state George Shultz suggested in 1987, should be considered a “shadow war”.

In this shadow war, assassination was seen as an available option – with some in the Bush Sr government proposing that if the ban on assassination did not apply to terrorists, it should not apply to drug traffickers either. Increasing violence by the Medellín Cartel at the time, alongside the Parks Memorandum and the administration’s declarations that cartels posed a national security threat, meant overt or covert use of force could be legitimised against the drug gangs too.

This became the legal rationale behind the so-called “kingpin strategy”, which involved the DEA, CIA, US armed forces and their local allies targeting and often killing drug lords and narcotraffickers. This included the leaders of the Medellín and Cali cartels. Escobar, for example, was killed by Colombian special forces in 1993, with extensive training and intelligence support from the US.

Covert and overt uses of force against “narcoterrorists” in the region continued under the following US administrations. This extended to leaders of rebel groups such as the Colombian Revolutionary Armed Forces (Farc), who were involved in drug trafficking and thus considered a threat by the US and its allies. The US role here was largely providing the technology that facilitated cross-border assassinations.

So, the use of US force against drug traffickers is not without precedent. But the measures threatened by Trump would in my view represent a dangerous escalation at a time of unprecedented international crisis. They are certainly a challenge to the Mexican government, whose president, Claudia Sheinbaum, has unequivocally stated: “The US is not going to come to Mexico with the military.”

Several studies into the use of force in the many wars on drugs have shown that military force is not an effective tool to counter the activities of cartels. Militarisation has already contributed to more violence in Mexico, and the decapitation of cartel leadership has often only increased the degree and brutality of such violence.

The Conversation

Luca Trenta 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. US force has been used against drug traffickers before – but Trump’s plan is a dangerous escalation – https://theconversation.com/us-force-has-been-used-against-drug-traffickers-before-but-trumps-plan-is-a-dangerous-escalation-262921

Succès Masra: how Chad’s opposition firebrand came to be sentenced to 20 years in prison

Source: The Conversation – Africa (2) – By Bourdjolbo Tchoudiba, Doctorant en Sciences Politiques-Université Paris-Est Créteil, Laboratoire Interdisciplinaire d’Études du Politique Hannah Arendt (LIPHA), Université Paris-Est Créteil Val de Marne (UPEC)

Chad’s opposition firebrand and a former prime minister, Succès Masra, was sentenced to 20 years in prison on 9 August. He was accused of inciting violence and hate speech on social media, leading to the death of 42 people in a clash between herders and farmers in the village of Mandakao in 2023.

The opposition leader had been arrested at his home on 16 May by men in military uniform. He was initially charged with “inciting hatred, inciting armed groups to revolt, complicity in murder, arson, and desecration of graves”.

Masra rose to prominence as one of the main opponents of the Chadian regime, particularly after the death of President Idriss Déby in 2021. For many, Masra embodies an alternative to the country’s political-military dynasties, especially the Déby family, who has ruled the country since Idriss Déby came to power in 1990.

When he died, his son, military officer Mahamat Idriss Déby, became president after assuming power and forming a three-year transitional government overseen by the military. Masra served as prime minister of this government from 1 January 2024 to 16 May 2025.




Read more:
Chad’s parliamentary election hands Mahamat Déby absolute control. Here’s why it’s dangerous


As a researcher who has studied the country’s political trajectory, I have observed how Masra, leader of Les Transformateurs (The Transformers) party, quickly gained influence after entering the Chadian political scene in 2018. His reformist message resonated with many young Chadians, especially unemployed graduates seeking change.

Political strategist

Masra’s strengths lie in his clear programme of political change and strategic approach to building a political base as well as his maturity, despite being only 41. He holds a doctorate in economics, which adds to his credibility. His resignation from the African Development Bank to fully commit to the fight for political change struck a chord with many.

In a remarkably short time, Masra managed to shift the political landscape by challenging Idriss Déby directly. Fearing electoral defeat, Déby pushed through a constitutional amendment in 2018 that changed the age limit for presidential candidates, blocking Masra from running in the 2021 election. His party was also banned for a time for the same reason.

It was under the transitional government of Mahamat Idriss Déby that Masra’s party was officially recognised on 8 June 2021. It soon became Chad’s main opposition. Masra, along with several civil society groups, rejected the transition model in Chad. They boycotted the national dialogue. In their view, it was not a genuine dialogue but a “monologue”. They believed its real purpose was to legitimise the Déby family’s dynastic succession and ensure the continued rule of their Mouvement patriotique du salut (Patriotic Movement for Salvation).

The boycott’s most dramatic moment was the peaceful protest of 20 October 2022, called by Masra to oppose extending the transition. It was violently suppressed, leaving many dead.

Exile and return

To save their lives, Masra and his close associates were forced into exile to the US at the end of 2022. He returned to Chad on 3 November 2023, under a reconciliation deal. Mahamat Idriss Déby appointed him prime minister on 1 January 2024.

With his return and appointment, Les Transformateurs’ political stance shifted dramatically towards supporting the government. Despite this, Masra retained the loyalty of his supporters. However, his short tenure as prime minister was marked by growing tensions with the government, often aired through public statements.

Detention

On 21 May, Masra was formally charged after five days in police custody. During his interrogation, a pro-government outlet claimed he was part of a plot against the state. The claim was based on information allegedly found on his phone, including exchanges with French officials and President Emmanuel Macron. It is extremely rare in Chad for a former prime minister to face such action, suggesting underlying political motives.




Read more:
Coups in west Africa have five things in common: knowing what they are is key to defending democracy


Shortly after his arrest, Chad’s public prosecutor publicly accused Masra of inciting hatred, complicity in murder, and forming armed groups. He cited social media messages allegedly urging people in southern Chad to arm themselves against herder communities. These charges relate to a deadly farmer-herder conflict that left 42 dead and caused major damage, mostly among the Fulani community.

Meanwhile, at a press conference three government ministers said an audio message in Ngambaye, Masra’s native language, was linked to him. According to them, the recording directly urged the killing of Fulani herders in their camp.

Audio recording

This accusation was made without independent investigation. The government’s message was amplified by ruling party heavyweights on social media and in politically and ethnically charged WhatsApp groups. The rapid developments gave the impression of a judicial system being weaponised. Many Chadians already see the judiciary as a tool of the military regime.

According to Masra’s lawyers, the audio presented as evidence dates back to 2023. The authenticated 2023 recording captures Masra, in exile, urging the Ngambaye people to arm themselves and defend their community against herder attacks on farmers.

Masra is not the first politician to call for self-defence in Chad. Rising intercommunal violence is widespread, fuelled by social injustice, impunity and insecurity.




Read more:
Idriss Déby Itno offered Chadians great hope, but ended up leaving a terrible legacy


Chadian criminal law guarantees the presumption of innocence and the right to legal counsel from the preliminary investigation stage. Yet no such process was followed for Masra. At the same time, government communications targeting him multiplied.

Officials took the unusual step of leaking unverified “evidence” (the audio) while the investigation was still underway, a clear breach of procedure.

During the seventh anniversary of Les Transformateurs, Masra publicly urged Mahamat Idriss Déby to “change course and deliver the change the people demand”.

The Toumaï Agreement

A striking revelation from that anniversary event was the existence of another deal, known as the Toumaï Agreement between the government and Masra’s political party, meant to end the political crisis in Chad. This was in addition to the Kinshasa Accord.

Masra’s lawyers argued that the Toumaï Agreement should protect Masra from prosecution as it lifted an international arrest warrant against him. The ruling party’s strong reaction to the agreement being disclosed suggests a deeper political rift.

Many of Masra’s supporters, opposition parties and civil society organisations believe the trial was aimed at neutralising him both politically and physically.

The Conversation

Bourdjolbo Tchoudiba 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. Succès Masra: how Chad’s opposition firebrand came to be sentenced to 20 years in prison – https://theconversation.com/succes-masra-how-chads-opposition-firebrand-came-to-be-sentenced-to-20-years-in-prison-262985

Kenya’s 1950 Kolloa massacre: Britain won’t own up to its colonial violence but communities need closure

Source: The Conversation – Africa (2) – By Chloé Josse-Durand, Senior Research Associate in African Politics, Newcastle University

In 1950, British forces killed at least 29 civilians in one of the deadliest, but least chronicled, episodes of colonial violence in Kenya.

Armed soldiers killed at least 29 civilian members of Dini ya Msambwa, a spiritual and anti-colonial movement in Kenya active around what is now West Pokot county in the north-western region. Survivors describe the group’s gathering on 24 April 1950 as a peaceful one. However, British colonial forces, fearing a potential uprising, violently confronted the group at the Kolloa trading centre.

It led to one of the highest number of deaths in a single day in a single place in Kenya’s colonial period.

For the surviving families and followers of Dini ya Msambwa (the “religion of the spirits” in Kiswahili), it was a massacre. However, the British government has never publicly apologised for this atrocity.

The movement’s adherents continue to seek justice and recognition, but they face legal, political and historical roadblocks.

I am part of a team at Newcastle University working on Afterlives of Colonial Incarceration, a project focused on former British colonies. I’ve been working closely with communities affected by colonial violence in Kenya, including Dini ya Msambwa adherents.

In my view, Britain’s recognition of the Kolloa massacre isn’t just a matter of historical record. It is about acknowledging that the group’s pain is real, their loss unjust and their struggle worth remembering.

To acknowledge Kolloa as a massacre would open the door to legal and moral accountability from the British government. This would help Dini Ya Msambwa followers affirm the legitimacy of their historical grievances and their place in Kenya’s national story.

Crucially, it could also lay the groundwork for reparations, which could include financial compensation for surviving families, and the restitution of confiscated land and livestock.

The British government remains silent on the massacre. But this doesn’t erase memory. Dini ya Msambwa followers and representatives and historians are working to ensure that Kolloa – like so many forgotten chapters of colonial violence in Africa and beyond – is not buried with the last of its survivors.

The group’s origins

Dini ya Msambwa was founded in the 1940s by Elijah Masinde among the Bukusu people of western Kenya. The movement rejected colonial authority, resisted Christian missionary dominance and called for a return to African spirituality and traditions.

This combination of cultural pride and political defiance made it a target for suppression by British authorities.

Lukas Pkech, a prominent Pokot leader, brought Masinde’s preachings to West Suk and Baringo in the British-administered north-west region in 1950. His teachings were increasingly influential among Pokot communities and were seen as a direct challenge to colonial order.

British district commissioner Arthur Simpsons, along with a contingent of tribal police and British officers led by Alan Stevens, moved to quell the movement and most likely to kill its leader. What followed was a fatal confrontation in Kolloa: over 300 Dini ya Msambwa followers, armed mainly with spears, faced off with colonial security forces in what came to be called the Kolloa Affray.

Pkech and at least 28 followers were killed, along with Stevens, two other British nationals and an African askari (soldier). Oral testimonies suggest that between 44 and 50 people were killed – 29 during the event itself, and 15 to 20 others later succumbing to wounds sustained in the fighting. At least 176 Dini ya Msambwa members present at the standoff were imprisoned. Seven of them were executed for their direct involvement.

This event led to increased repression of Pokot communities and suspected Dini ya Msambwa leaders and followers.

The colonial administration confiscated over 5,600 cattle and deployed a special police force in the region. Residents were forced into hard labour on district roads as part of communal punishment. Hundreds of adherents were thrown into colonial jails and detention camps near the district administrative centre, Kapenguria.

The exact number of Dini ya Msambwa followers today is hard to assess as many choose to remain discreet for their own safety. However, the growing visibility of branches like Dini ya Roho Mafuta Pole ya Africa (African Religion of the Gently Anointing Spirit) indicates the movement’s enduring significance in Pokot society.

Dini ya Roho attracts approximately 4,000 members weekly for worship and yearly for Kolloa commemorations. In the church’s doctrine, the deaths at Kolloa are reinterpreted as a selfless act of sacrifice in fulfilment of peace for the community. Since its official registration in 2012, the church has gained growing influence.

Silencing through legal reform

In 2013, the UK government issued a formal apology and paid £19.9 million (US$26.5 million) in compensation to 5,228 Mau Mau veterans. The compensation was related to Britain’s brutal suppression of the Mau Mau uprising (1952–1960), also known as the “Kenya Emergency”. This was a large-scale anti-colonial rebellion during which more than 150,000 Kenyans were detained without trial in a vast system of camps and fenced villages. Here, torture, forced labour and systematic abuse were widespread.

The Mau Mau case secured an official apology and compensation for colonial-era torture. It also demonstrated that legal redress for historical injustices was possible.

Yet, it was also a strategic concession by the UK government.

It was limited in scope, restricted to a specific group (those tortured during the Emergency), and designed to avoid setting a broad legal precedent.

Since then, the UK has enacted a new law – the Overseas Operations Act – that imposes strict legal limits on claims related to the actions of British troops abroad, effectively barring historical claims.

Worse still, under the legal doctrine known as divisibility of the Crown, claimants must prove that abuses were ordered by the UK government in London, not just carried out by colonial administrators.

In the case of Kolloa, where documentation is sparse and most evidence comes from oral testimonies, this is an almost impossible task.

Further, unlike the Mau Mau case, which gained global attention, Kolloa has remained largely absent from mainstream narratives. The Kenyan government has lacked political will to put pressure on Britain and has itself seen the movement as dangerous. It remained banned until 2012, after the new constitution strengthened protections for freedom of religion and beliefs.

Without strong advocacy from the Kenyan state, Britain has no diplomatic incentive to revisit or acknowledge Kolloa.

Is there still hope for justice?

One promising path is international litigation. In 2022, the Talai clan from Kenya’s Nandi and Kipsigis communities – themselves victims of colonial brutality – brought a case against the UK at the European Court of Human Rights. Their efforts could set a precedent for groups like Dini ya Msambwa seeking redress beyond British courts.

Back home, Kenya’s devolved county government of West Pokot has also given representatives from the church more freedom to speak openly. While the group remains cautious about challenging the national government directly, there’s a growing movement for memorialisation, truth telling and intergenerational dialogue.

For Dini ya Msambwa, the fight is about more than financial compensation. It is about being seen, heard and remembered. The group’s struggle touches on deeper questions of dignity, memory and the right to practise their faith with pride instead of fear and resentment.

The Conversation

Chloé Josse-Durand receives funding from Newcastle University and the Leverhulme Trust.

ref. Kenya’s 1950 Kolloa massacre: Britain won’t own up to its colonial violence but communities need closure – https://theconversation.com/kenyas-1950-kolloa-massacre-britain-wont-own-up-to-its-colonial-violence-but-communities-need-closure-262133

Wild salmon are the Zendayas of the fish world – what that tells us about conservation

Source: The Conversation – UK – By William Perry, Postdoctoral Research Associate at the School of Biosciences, Cardiff University

An Atlantic salmon slowmotiongli/Shutterstock

Wild salmon are not just rarer than their farmed cousins – they’re better looking too. In a new study by my colleagues and I, we found that they are noticeably more symmetrical than those reared in captivity. In other words, they’re prettier (by human standards, at least). And that’s not just cosmetic.

The global sale of aquatic species reared in captivity (known as aquaculture) is worth more than US$300 billion (£225 billion) annually. That’s a huge figure that doesn’t even include the wholesale or retail markups and revenue generated from other industries such as processing or packaging.

Of all the cultured aquatic organisms, the Atlantic salmon is the most valuable but is seeing widespread declines in the wild.

To put salmon decline into perspective, in 2024 the aquaculture industry produced somewhere in the region of 3 million metric tonnes of Atlantic salmon for consumption, which is roughly 600 million fish (assuming a harvest weight of 5kg per fish). Yet, there are fewer than two million wild Atlantic salmon returning to rivers every year.

This has led to the Atlantic salmon being classified as endangered in Britain by the International Union for Conservation of Nature. Some countries have turned to hatcheries as a way to boost wild numbers, releasing captive-bred fish into rivers to try to strengthen struggling populations.

But rearing fish in artificial hatchery environments changes elements of their biology, making them less likely to survive in the wild. Not only this, but when they are released into the wild, their genetics can pollute local gene pools.

So, while hatcheries seem to offer a solution to declining wild salmon populations, decades of research has shown that they largely have a negative effect on the populations they are trying to save. Despite these problems, hatcheries can sometimes be the only thing standing between a population and extinction.

We carried out our study on the Saimaa salmon in Finland, a critically endangered, landlocked population that’s been around since the last ice age. Once common in the wild, the Saimaa salmon would now go extinct in the wild if it were not for hatchery production sustaining the population. This is because the construction of hydropower stations and deforestation destroyed their natural spawning habitats in the 20th century.

An aerial view of Lake Saimaa on a summer's day.
Lake Saimaa in Finland.
ArtBBNV/Shutterstock

In humans, facial symmetry is often associated with beauty. It’s no coincidence that stars like Zendaya and Harry Styles, whose features exhibit remarkable symmetry, are held up as icons of attractiveness.

In fish, symmetry is associated with low environmental stress. So, it can be a valuable tool for understanding how effective hatcheries are in producing more natural fish.

To understand how hatchery conditions shape fish development, we photographed Saimaa salmon from both sides and compared their features. Some fish had spent a year in tanks, others just a few days before being released into a river. We then measured their symmetry as an indicator of stress.

What we found was striking. Even fish reared in captivity for just one year showed clear signs of asymmetry. And efforts to enrich their lives, such as by adding shelters and fluctuating water flows, did not prevent asymmetry.

The only technique that prevented asymmetry was releasing the fish into a natural river after they had just hatched, minimising their exposure to the hatchery environment.

Fish released into the wild after hatching also had larger pectoral fins and lower jaws, relative to body size, when compared to those reared in captive environments. These traits may be beneficial in the wild where there are more complex river flows and diets. They were reduced in those fish who had spent most of their life in the hatchery.

Letting nature lead

Our research suggests that the hatchery environment – no matter how carefully managed – is no substitute for nature. While hatcheries can act as a stopgap for critically endangered populations like the Saimaa salmon, they are not a long-term fix for species in decline.

If hatcheries must be used, our study show it’s vital to get fish into natural conditions as early as possible. But ultimately, if we want wild salmon to not just survive but thrive, we have to fix the problems that caused their decline in the first place.

Humanity often tries to engineer its way out of environmental crises. But nature isn’t easily replaced. Sometimes, the best solution is to give it the space to recover on its own.

The Conversation

William Perry 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. Wild salmon are the Zendayas of the fish world – what that tells us about conservation – https://theconversation.com/wild-salmon-are-the-zendayas-of-the-fish-world-what-that-tells-us-about-conservation-262268

Morocco using economic clout to strengthen grip on disputed Western Sahara territory

Source: The Conversation – UK – By Andrea Maria Pelliconi, Lecturer in Human Rights Law, University of Southampton

Christopher Nolan, known for directing blockbusters like Memento, Interstellar and Oppenheimer, is facing public backlash for filming scenes of his new film, The Odyssey, in part of north Africa called Western Sahara.

The territory, formerly known as Spanish Sahara when it was administered from Madrid, was occupied by the Moroccan military in the 1970s and unlawfully annexed. It remains classified by the UN as a “non-self-governing territory” awaiting decolonisation.

The recent controversy concerns the filming of part of The Odyssey in Dahkla, a Western Saharan city on the coast of the Atlantic Ocean. It has brought attention to one of the most overlooked and protracted armed conflicts in the modern world, now 50 years old.

Since Spain’s withdrawal in 1975, Western Sahara has been entangled in a territorial dispute involving an Algeria-backed national liberation movement called the Polisario Front, Morocco and, briefly, Mauritania. Amid serious human rights concerns, Morocco now occupies around 80% of the territory.

This is despite a landmark 1975 International Court of Justice (ICJ) advisory opinion affirming that the indigenous Sahrawi people have the right to decide whether to join Morocco or form their own state in a UN-backed referendum.

The referendum, which has been repeatedly delayed, is intended to ensure the free expression of the will of the Sahrawi people. Known as the “people of the Sahara”, the Sahrawi are made up of numerous tribes with a shared culture. They are a distinct ethnic group from Moroccans.

Only part of the Sahrawi people continue to live in Western Sahara under Morocco’s control. Most have fled to Algerian refugee camps supported by the UN Refugee Agency.

A map of Morocco and Western Sahara.
Morocco has claimed Western Sahara as its own since 1975.
Peter Hermes Furian / Shutterstock

It was from Algeria, in 1976, that the Polisario Front declared the Sahrawi Arab Democratic Republic (SADR). The Polisario Front claims to represent the Sahrawi people and is considered a legitimate interlocutor by the UN and EU.

The SADR is now a member of the African Union and has, over the years, been recognised (and sometimes un-recognised) by numerous states. Yet it is far from being universally recognised, and Morocco and Polisario continue to engage in armed hostilities for territorial control.

Only a referendum could determine whether the Sahrawi want to be Moroccans or have their own state. But five decades on from the ICJ’s advisory opinion, no such referendum has been held. Meanwhile, Morocco has entrenched its control of Western Sahara, or what it calls the “Southern Provinces”.

It has done so by changing the demographic composition of the population by civil and military means, and bolstering international support for its 2007 autonomy plan. The plan offers limited self-rule for Sahrawis under Moroccan sovereignty, and is harshly opposed by Polisario and Sahrawi groups.

Recognising Moroccan sovereignty

In 2020, under the first Trump administration, the US became the first major power to recognise the autonomy plan and Moroccan sovereignty over Western Sahara. This was part of a diplomatic quid pro quo for Rabat’s normalisation of ties with Israel under the Abraham Accords. Washington has recently reaffirmed its position.

Other global players have followed suit. Spain endorsed the autonomy plan in 2022, despite maintaining an ambiguous policy of “active neutrality”. And France officially recognised Morocco’s sovereignty in 2024.

In June 2025, the UK stated that the autonomy plan represents “the most credible, viable and pragmatic basis for a mutually agreed and lasting solution to the Western Sahara dispute” in a joint communiqué with Morocco. This was despite affirming later that the territory remains of “undetermined” status.

Growing support for Morocco’s sovereignty claims is driven by several geopolitical interests. These include energy security, investment opportunities, counter-terrorism cooperation, migration management and regional influence.

Western Sahara is rich in phosphates, fisheries and potential offshore oil and gas reserves. Major infrastructure projects there, including water management, ports and renewables, are luring international investors.

More recently, Morocco has expanded its focus to tourism and transport development and, as seen with Nolan’s film and its plans to co-host the 2030 Fifa men’s World Cup, apparently also the entertainment industry.

Rabat seems to be using development as a means of domination. And its growing economic clout and regional influence are shifting the cost-benefit calculus of world powers to take Morocco’s side in this dispute. This has made support for legal principles politically inconvenient.

But legal principles matter and consistently support the Sahrawi position. In 2022, the African Court on Human and Peoples’ Rights reaffirmed that Morocco’s continued occupation violates the Sahrawi people’s right to self-determination. This right is a “jus cogens norm” in international law, meaning it is binding on all states and cannot be derogated from.

The International Law Commission stipulates that third states must neither recognise situations arising from breaches of such norms nor assist in their maintenance. This position was reaffirmed by the ICJ in July 2024. In its advisory opinion on Israel’s occupation of Palestinian territories, it reiterated that states and international organisations should not aid or assist the maintenance of illegal occupations.

This further implies that states should disengage from their investments in Western Sahara unless these have been agreed with the Sahrawi people. In October 2024, the EU’s Court of Justice annulled EU-Morocco trade and fisheries agreements where these applied to Western Sahara. It cited the lack of Sahrawi consent in violation of self-determination.

The growing diplomatic endorsement of Morocco’s autonomy plan risks legitimising an unlawful occupation under the veneer of pragmatism. The normalisation of occupation sets a troubling precedent for other territorial disputes around the world, from Ukraine and Palestine to Syria and Kashmir.

Some argue that Morocco’s autonomy plan represents a “realistic” solution to an intractable conflict. But decisions imposed without consent are not solutions, as they lead to further opposition and conflict. Privileging power over principle would betray the Sahrawi people and jeopardise international law.

The Conversation

Andrea Maria Pelliconi is a recipient of a British Academy/Leverhulme Small Research Grant (2024 – 2026) to complete a study of demographic engineering and apartheid in Western Sahara.

I gratefully acknowledge the work of our two research assistants: Dr. Meriem Naili and Beya Mousli. For further information about our project please visit: https://www.nottingham.ac.uk/research/groups/nottingham-international-law-and-security-centre/research/western-sahara-project/western-sahara-project.aspx

Victor Kattan is a recipient of a British Academy/Leverhulme Small Research Grant (2024 – 2026) to complete a study of demographic engineering and apartheid in Western Sahara.

ref. Morocco using economic clout to strengthen grip on disputed Western Sahara territory – https://theconversation.com/morocco-using-economic-clout-to-strengthen-grip-on-disputed-western-sahara-territory-262763

Menopause and brain fog: why lifestyle medicine could make a difference

Source: The Conversation – UK – By Maria Pertl, Lecturer in Psychology, Department of Health Psychology, RCSI University of Medicine and Health Sciences

SpeedKingz/Shutterstock

By 2030, an estimated 47 million women worldwide will enter menopause each year. The transition through menopause can last several years and brings with it a host of physical, mental and brain changes. One of the most distressing symptoms reported by women is “brain fog”.

This umbrella term refers to difficulties with memory, concentration and mental clarity. Women may find themselves forgetting words, names or appointments, or misplacing items. While these symptoms can be alarming, they usually resolve after menopause and are not a sign of dementia.

Hormonal fluctuations, particularly declining oestrogen levels, are a key driver of cognitive changes during the menopause transition. But it’s not just hormones. Hot flushes, night sweats, poor sleep and low mood all contribute to cognitive difficulties. The good news? Many of the contributing factors are modifiable. That’s where lifestyle medicine comes in.

Lifestyle medicine is an evidence-based approach that uses lifestyle interventions to prevent and manage chronic conditions such as heart disease, diabetes and dementia. It focuses on six pillars: sleep, physical activity, nutrition, stress management, social connection and avoidance of harmful substances. These same pillars can also support cognitive health during menopause.

Sleep is an underestimated factor in brain health — it is essential for memory consolidation and brain repair. Yet one in three women going through menopause experience significant sleep disturbance. Hot flashes, anxiety, and hormonal changes can all disrupt sleep, creating a vicious cycle that worsens brain fog.

Improving sleep hygiene can help. This includes avoiding caffeine late in the day, reducing screen time before bed, keeping a consistent sleep schedule and maintaining a cool bedroom. Physical activity during the day – especially outside in the morning – also supports better sleep.

Physical activity is one of the most powerful tools for brain health. It improves blood flow to the brain, reduces inflammation and increases the size of the hippocampus (the brain’s memory centre). It also helps regulate mood, improve sleep and support cardiovascular and metabolic health. For menopausal women, it has the added benefit of improving bone health, sexual function and maintaining a healthy weight.

The World Health Organization recommends at least 150–300 minutes of moderate-intensity aerobic activity per week, plus two sessions of muscle-strengthening exercises. Even brisk walking can make a difference.

Stress can make it difficult to think clearly and chronic stress may accelerate brain ageing through chronically elevated cortisol levels. Menopause can be a stressful time, especially when cognitive changes affect sleep, confidence and daily functioning.

Mindfulness, yoga, tai chi and breathing exercises can help reduce stress and improve focus. Cognitive behavioural therapy (CBT), a form of talking therapy, is also effective in addressing negative thought patterns and improving coping strategies. Finding a hobby that brings joy or a sense of “flow” can also be a powerful stress reliever.

What we eat plays a crucial role in brain health. The Mediterranean diet — rich in vegetables, fruits, whole grains, legumes, nuts, olive oil and fish — has been linked to better memory and reduced risk of cognitive decline.

Omega-3 fatty acids, found in fatty fish and flaxseeds, are particularly beneficial for brain function. Avoiding ultra-processed foods, added sugars and trans fats can help reduce inflammation and stabilise energy levels.

Social connection is a powerful yet often overlooked pillar of lifestyle medicine that has substantial effects on physical, mental and brain health. During menopause, women may feel less able to participate in social activities and experience increased isolation or changes in relationships, which can negatively affect mood and cognition.

Strong social ties stimulate the brain, support emotional regulation, and buffer against stress. Quality matters more than quantity. Regular check-ins with friends, joining a club, volunteering, or even brief positive interactions can all make a difference.

Alcohol and other substances can have a circular effect on sleep, mood, and cognition. While alcohol may initially feel relaxing, it disrupts sleep quality and can worsen anxiety and memory issues.

Reducing alcohol and avoiding tobacco and recreational drugs can improve sleep, mood and cognitive clarity. If cutting back feels difficult, seeking support from a healthcare professional or support group can be a helpful first step.

Making lifestyle changes can feel overwhelming, especially when you’re already feeling tired or stressed. Financial pressures or personal circumstances can make lifestyle changes feel out of reach. Start small. Make just one change in one pillar, such as sticking to a regular bedtime or adding a short daily walk, and build from there. Small, consistent steps can make a big difference to clearing brain fog.

Menopausal brain fog is real, but it’s also manageable. By focusing on the six pillars of lifestyle medicine, women can take proactive steps to support their cognitive health and overall wellbeing during this important life transition.

The Conversation

Maria Pertl receives research funding from the Irish Cancer Society and the National Cancer Control Programme. She is a committee member of the Irish Society of Lifestyle Medicine.

Lisa Mellon co-founded the Irish Society for Lifestyle Medicine.

ref. Menopause and brain fog: why lifestyle medicine could make a difference – https://theconversation.com/menopause-and-brain-fog-why-lifestyle-medicine-could-make-a-difference-261683

My research team used 18 years of sea wave records to learn how destructive ‘rogue waves’ form – here’s what we found

Source: The Conversation – USA – By Francesco Fedele, Associate Professor of Civil and Environmental Engineering, Georgia Institute of Technology

Rogue waves have captivated the attention of both seafarers and scientists for decades. These are giant, isolated waves that appear suddenly in the open ocean.

These puzzling giants are brief, typically lasting less than a minute before disappearing. They can reach heights of 65 feet (20 meters) or greater and often more than twice the height of surrounding waves. Once a nautical myth, rogue waves have now been observed around the world. Because they’re so tall and powerful, they can pose a danger to ships and offshore structures.

To rethink what rogue waves are and what causes them, I gathered an international team of researchers. Our study, published in Nature Scientific Reports, sheds light on these oceanic giants using the most comprehensive dataset of its kind.

By analyzing 18 years of high-frequency laser measurements from the Ekofisk oil platform in the central North Sea, we reached the surprising conclusion that rogue waves aren’t just freak occurrences. They arise under the natural laws of the sea. They are not mysterious, but somewhat simple.

27,500 sea states

We analyzed nearly 27,500 half-hour wave records, or sea states, collected between 2003 and 2020 in the central North Sea. These records, taken every 30 minutes, describe how elevated the sea surface was compared to the average sea level. They include major storms, such as the Andrea wave event in 2007.

Several structures standing in the sea.
A complex of platforms on the Ekofisk oil field in the North Sea.
BoH/Wikimedia Commons, CC BY-SA

Under normal conditions, waves arise from wind blowing over the sea surface. It’s like when you blow over your cup of coffee and form small ripples on the surface. At sea, with enough time and space, those ripples can turn into large waves.

We focused on understanding what causes waves to suddenly go rogue and rise far above their neighboring waves. One proposed theory is based on modulational instability, a phenomenon described by complex mathematical models. I’ve revised these models in the past, as my work suggests that this theory doesn’t fully explain what causes rogue waves in the open ocean.

A diagram showing the height of waves in different sea states, with the tallest reaching about half the height of a large commercial boat.
Sea states record the height of waves and show when some waves rise high above sea level.
U.S. Government Accountability Office

When waves are trapped within a narrow channel, the modulational instability theory describes their rippling movement well. However, it starts to fall apart when you look at the real ocean. In open environments such as the North Sea, waves are free to propagate from multiple directions.

To understand the difference, imagine a crowd of spectators leaving a stadium after a football game. If the exit is a long, narrow hallway with tall walls, people are forced to move in a single direction. Those at the back push forward, and some may even climb over others, piling up between the confining walls. This catastrophic pileup would resemble a rogue wave, caused by their confinement.

In contrast, if the stadium’s exit opens onto a wide field, spectators can disperse freely in all directions. They don’t push on each other, and they avoid pileups.

Similarly, researchers can generate rogue waves in a confined channel in the lab, where they obey modulational instability. But without the confinement of a channel, rogue waves usually won’t follow those physics or form the same way in the open sea.

Our team knew we had to study the open sea directly to figure out what was really going on. The real-world data my team examined from the North Sea doesn’t line up with modulational instability – it tells a different story.

A sailboat caught in the swell of a tall wave, under a cloudy sky
Rogue waves are much taller than the others around them.
John Lund/Stone via Getty Images

It’s just a bad day at sea

We analyzed the sea state records using statistical techniques to uncover patterns behind these rare events. Our findings show that instead of modulational instability, the extreme waves observed more likely formed through a process called constructive interference.

Constructive interference happens when two or more waves line up and combine into one big wave. This effect is amplified by the natural asymmetry of sea waves – their crests are typically sharper and steeper than their flatter troughs.

Rogue waves form when lots of smaller waves line up and their steeper crests begin to stack, building up into a single, massive wave that briefly rises far above its surroundings. All it takes for a peaceful boat ride to turn into a bad day at sea is a moment when many ordinary waves converge and stack.

These rogue waves rise and fall in less than a minute, following what’s called a quasi-deterministic pattern in space and time. This type of pattern is recognizable and repeatable, but with touches of randomness. In an idealized ocean, that randomness would almost vanish, allowing rogue waves to grow to nearly infinite heights. But it would also take an eternity to witness one of these waves, since so many would have to line up perfectly. Like waiting for Fortuna, the goddess of chance, to roll a trillion dice and have nearly all of them land on the same number.

In the real ocean, nature limits how large a rogue wave can grow thanks to wave breaking. As the wave rises in height and energy, it can’t hold itself beyond a certain point of no return. The tip of the wave spills over and breaks into foam, or whitecap, releasing the excess energy.

The quasi-deterministic pattern behind rogue waves

Rogue waves aren’t limited to the sea. Constructive interference can happen to many types of waves. A general theory called the quasi-determinism of waves, developed by oceanographer Paolo Boccotti, explains how rogue waves form, both in the ocean and in other wave systems.

For example, for turbulent water flowing through a confined channel, a rogue wave manifests in the form of an intense, short-lived spike in vortices – patterns of spinning swirls in the water that momentarily grow larger as they move downstream.

While ocean waves seem unpredictable, Boccotti’s theory shows that extreme waves are not completely random. When a really big wave forms, the waves in the sea around it follow a recognizable pattern formed through constructive interference.

We applied Boccotti’s theory to identify and characterize these patterns in the measured North Sea wave records.

The giant waves observed in these records carry a kind of signature or fingerprint, in the form of a wave group, which can reveal how the rogue wave came to life. Think of a wave group like a small package of waves moving together. They rise, peak and then fade away through constructive interference. Tracking these wave groups allows researchers to understand the bigger picture of a rogue event as it unfolds.

As one example, a powerful storm hit the North Sea on Nov. 24, 2023. A camera at the Ekofisk platform captured a massive 55 foot (17 meter) rogue wave. I applied the theory of quasi-determinism and an AI model to investigate the origin of this extreme wave. My analysis revealed that the rogue event followed these theories – quasi-determinism and constructive interference – and came from multiple smaller waves repeatedly stacking together.

Left: Stereo video footage of a powerful storm in the North Sea on Nov. 24, 2023, recorded at the Ekofisk platform.
Right: The wave group signature of the recorded rogue wave.

Recognizing how rogue waves form can help engineers and designers build safer ships and offshore platforms – and better predict risks.

The Conversation

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

ref. My research team used 18 years of sea wave records to learn how destructive ‘rogue waves’ form – here’s what we found – https://theconversation.com/my-research-team-used-18-years-of-sea-wave-records-to-learn-how-destructive-rogue-waves-form-heres-what-we-found-260900

Women in STEM face challenges and underrepresentation – this course gives them tools to succeed

Source: The Conversation – USA – By Filomena Nunes, Professor of Physics, Michigan State University

Women with strong networks and communities are most likely to succeed in the STEM fields. LWA/Dann Tardif via Getty Images

As a graduate student in physics, I was often the only woman in the room. As I gained more experience, I learned valuable lessons about the scientific community and how to better advance my career. Once I started mentoring female graduate students, I realized that many of them had also felt alienated around some scientists, an experience that chipped away at their confidence or the passion for their work.

Over two decades of doing research and mentoring students, I have compiled some tools that give women the power to improve their own experiences in the STEM world. In 2019, I turned these resources into an experiential course called Tools for Women in STEM. Although the course is designed for women, all genders are welcome.

There are many reasons women are underrepresented in STEM, including bias and stereotypes, but also workplace cultures and the absence of policies for work-life balance. A report from the American Association for University Women makes recommendations for improving the retention of women in STEM careers: ensuring women are getting the mentoring they need, supporting a work-life balance and creating a welcoming culture.

This is all easier said than done. Despite the many programs and initiatives implemented across the country since 2010, when the AAUW report came out, the percentage of women in many fields of science, technology, engineering and math continues to stay very low, with a trend that is flat at best. Even if they come into the field, many choose to leave.

What does the course explore?

To help young women navigate their professional lives in STEM, I start by taking each student on a personal journey, beginning by contextualizing their experiences in STEM. Students reflect on the shame triggers that can make them feel like they’re not good enough even when their record is stellar, as well as any biases they may have about others. Self-awareness is an essential starting point.

Students then work on skills with real-life impact, ranging from networking at meetings and building effective relationships with mentors to negotiations, dealing with harassment and exploring leadership roles. This is done through in-class activities and often followed up with practice in their real life.

Two women, one older and one younger, sitting in front of a computer screen.
Strong relationships with mentors can help women succeed in the STEM field.
Willie B. Thomas/DigitalVision via Getty Images

What does the course prepare students to do?

Prepped by videos and papers, students practice these skills and discuss strategies in small groups. This model provides an opportunity for collaboration and for assimilating and sharpening all the skills covered in the course.

Take mentoring as an example. Students practice reaching out to potential mentors and establishing a new mentoring relationship. Through discussion, students learn to both receive and provide useful feedback. When students have a safe, trusting environment, they’re more inclined to try out new things.

During the last month of the course, students practice communicating effectively in a wide range of circumstances characteristic of a STEM career. They focus on one type of communication each week: scientific presentations, posters, research group meetings and outreach, all important skills in a STEM job that aren’t always formally taught.

We wrap up the course with a “Women in STEM” outreach event that is fully created and implemented by the students themselves. This event has ranged from organizing a STEM research fair, speaking to undergrads about bridges between STEM and real life, and collecting sticky notes from researchers about their experiences in STEM.

A chalkboard covered in post it notes.
Graduate students in the Tools for Women in STEM course collected sticky notes about other researchers’ experiences in the STEM field as part of the course.
Filomena Nunes

As students work together in a safe, trusting environment, they develop their own voices and gain confidence. And the connections established during the course can continue throughout their graduate program.

Why is this course relevant now?

Today, women in STEM have higher expectations for their workplace than those of previous generations, and they are less tolerant of toxic environments. Courses like this can empower students to advocate for a better experience and promote a healthy culture for women in STEM.

Women aren’t the only group underrepresented in STEM. Instruction that tailors these lessons to the challenges faced by other identity groups could help many other students succeed.

Uncommon Courses is an occasional series from The Conversation U.S. highlighting unconventional approaches to teaching.

The Conversation

Filomena Nunes receives funding from NSF and DOE.

ref. Women in STEM face challenges and underrepresentation – this course gives them tools to succeed – https://theconversation.com/women-in-stem-face-challenges-and-underrepresentation-this-course-gives-them-tools-to-succeed-261505

San Francisco and other cities, following a Supreme Court ruling, are arresting more homeless people for living on the streets

Source: The Conversation – USA – By Stephen Przybylinski, Assistant Professor of Geography, Michigan State University

A person walks past a homeless encampment in the Skid Row community in Los Angeles in June 2024. Mario Tama/Getty Images

Homelessness is on the rise in the United States, and in some places, it is becoming more common for the police to arrest someone for sleeping or living in a public space.

In June 2024, the Supreme Court issued a ruling, Grants Pass v. Johnson, that determined it is constitutional to issue citations to or arrest homeless people, even when there is no available shelter.

The ruling reversed earlier federal appeals court rulings from 2019 and 2022 that determined cities cannot enforce anti-camping laws against homeless people if there are not enough shelter beds available for them.

The Supreme Court’s ruling also determined that the Eighth Amendment’s prohibition on cruel and unusual punishments does not protect homeless people from laws criminalizing resting in public places.

As someone who has spent more than a decade researching homelessness and speaking with unhoused communities, I have seen firsthand how enforcement of such laws imposes unavoidable hardships on homeless people and makes it harder for them to find a stable home.

A woman wearing a white pantsuit walks alongside a few people in a street that is littered in front of a few large buildings.
Los Angeles Mayor Karen Bass visits the site of a city-led sweep of a homeless encampment in Van Nuys, Calif., on July 31, 2025.
David Pashaee/Middle East Images/AFP via Getty Images

A rise in punitive action against homelessness

In 2024, there were an estimated 771,480 people in the U.S. who experienced homelessness on a single night, the highest number ever recorded.

Since June 2024, almost 220 local measures have passed that restrict or ban acts like sleeping, sitting or panhandling in public in cities that include Phoenix; Gainesville, Florida, and Reno, Nevada.

The rate of unsheltered homelessness, meaning homeless people who are sleeping in places that are not meant for humans to rest in, like parks or cars, is the highest in California.

After the Supreme Court’s decision, California Gov. Gavin Newsom issued an executive order in July 2024 that directs state agencies and departments to adopt new policies that remove homeless encampments. Those are temporary outdoor living spaces used by homeless people, often on public or private property.

Following this executive order, more than two dozen California cities and towns adopted or considered adopting sweeping bans on homeless encampments.

Not every leader has embraced this approach of what some observers call criminalizing homelessness. Los Angeles Mayor Karen Bass, for example, rejected criminalizing homelessness as “backwards” in June 2024.

Nevertheless, many cities are enforcing existing and new bans on homeless encampments more aggressively than before the Supreme Court decision – despite evidence that such enforcement is not effective in dealing with the problem of homelessness.

The impacts of aggressive enforcement

Research shows that arresting someone without a home for sitting, resting or sleeping in a public place does not reduce homelessness.

Instead, encampment sweeps and camping bans typically displace people from one area to another, while discarding or destroying their personal belongings in the process, such as identification cards, medications and sleeping gear.

This approach also wastes public resources by paying groups to throw away people’s belongings instead of investing that money into actual housing solutions, like creating more affordable housing options.

Homeless encampment sweeps by police or other government officials are also shown to make people living in camps sicker, leading to increases in hospitalizations and even deaths among those dependent on drugs or alcohol.

A punitive shift in San Francisco

San Francisco is an example of an American city with a relatively large homeless population that has taken a more aggressive approach to enforcing bans on homeless encampments over the past year.

A few weeks after the Supreme Court decision, then-San Francisco Mayor London Breed promised to be “very aggressive” in removing homeless encampments. She also said that “building more housing” would not solve the homelessness crisis.

City data shows that in the 12 months since the Supreme Court ruling, San Francisco police had arrested more than 1,000 homeless people for living in a public space – a scale of enforcement rarely seen in the city’s past. In the year leading up to the ruling, 111 people were arrested for illegal lodging

San Francisco identified approximately 8,300 homeless city residents in 2024.

In June 2025, I conducted a survey of 150 homeless people in San Francisco. About 10% of those people who gave a reason for a recent arrest reported being jailed for lodging without permission. Another 6% said they were arrested for trespassing.

In the same survey, which is part of an ongoing project, 54% of homeless San Francisco residents reported being forced to move from a public space at least once.

Another 8% reported being cited for another reason related to trespassing.

A less aggressive path in Portland

Other western American cities with large homeless populations have taken slightly different approaches to removing homelessness encampments since June 2024.

Portland, Oregon, for example, began enforcing a new daytime camping ban in July 2024. But Portland police have only made 11 arrests of homeless people for camping-related violations over the past year.

Other homeless people in Portland have received police citations for other offenses, like trespassing.

As part of my June 2025 study, I surveyed 150 homeless Portland residents. About 49% of respondents reported having been arrested at some point in their lives. Though no respondents were arrested for camping in a prohibited place, 68% of people I spoke with reported that police or other government officers forced them to leave a public space at some point over the past year.

And 13% of those who gave a reason for being cited by police said it was for camping in a prohibited place. Another 11% of homeless people were cited for some other reason related to living without shelter.

As part of the study, I also interviewed residents who had been arrested while living on the street. One Portland resident I interviewed – who asked not to be named to preserve their anonymity – told me they lost the chance to rent an apartment because they were arrested in 2023 on a preexisting, unrelated warrant after a police officer checked their ID – just days before they were supposed to pick up their keys.

“Many unhoused people have warrants simply for failing to appear after being cited for sitting or resting in public space,” they said. “I was supposed to go get the keys and, bam, I got picked up. I was arrested and went to court. Just me being in jail for five, six or five days screwed it all. I didn’t show up to get the keys, and then (the landlord) couldn’t get ahold of me, and they had no idea what was going on.”

The weeklong jail stay not only pushed this person back onto the street, but it also put them back onto a waiting list for housing – where they remain in 2025.

A person wearing a dark sweatshirt and hat holds onto a wheelchair as a man crouches in front of a tent next to the wheelchair.
A volunteer helps a person into his tent after relocating him from one park to another in Grants Pass, Oregon, in March 2024.
AP Photo/Jenny Kane

Looking ahead

The Supreme Court’s 2024 ruling did not mandate that cities criminalize homelessness. But it effectively gave cities the green light to do so without fear of violating people’s constitutional protections.

The effects of this ruling will be further felt with President Donald Trump’s July 24, 2025, executive order that ended federal support for approaches like Housing First, a policy that prioritizes providing homeless people with housing, before any other needed help. The order also calls for involuntarily committing homeless people with mental illness to mental health institutions.

As more cities consider tougher encampment ordinances, I think it is worth considering if more punitive measures really address homelessness. Decades of evidence suggest they won’t.

Instead, arresting homeless people often deepens their poverty, increases displacement and diverts public funding away from the real solution – stable, affordable housing.

The Conversation

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

ref. San Francisco and other cities, following a Supreme Court ruling, are arresting more homeless people for living on the streets – https://theconversation.com/san-francisco-and-other-cities-following-a-supreme-court-ruling-are-arresting-more-homeless-people-for-living-on-the-streets-262664

The new NextGen Acela trains promise faster travel and more seats – but arrive as US rail faces an uncertain future

Source: The Conversation – USA – By David Alff, Associate Professor of English, University at Buffalo

The new Acela trains are scheduled to start running on the Northeast Corridor soon. Courtesy of Amtrak

When former President Joe Biden unveiled his US$1.9 trillion infrastructure plan in 2021, he found the perfect place to go public: Philadelphia’s 30th Street Station rail yard.

Over the din of crackling wires and grumbling engines, the president made his case for revitalizing the country’s roads, ports, airports and rail lines.

Behind Biden sat rows of gleaming Amtrak trains. Among them was a prototype of NextGen Acela, a sleek machine engineered to deliver the fastest passenger service in American history.

On Aug. 28, 2025, NextGen will finally hit the rails, after years of delays.

As the author of a book on the Northeast Corridor, the rail line that connects Boston, New York, Philadelphia and Washington, I know this new train cannot come soon enough for many seaboard riders, even though it launches at a time of diminished political will for passenger rail.

Interior of modern train with seats with red headrests
Red headrests distinguish first-class cars from business class on the NextGen Acela trains.
Courtesy of Amtrak

Rail renaissance under fire

The French-designed, American-manufactured NextGen arrives years late due to mechanical defects and failed simulation tests mandated by the Federal Railroad Administration. The new Acela will begin whisking passengers along the corridor after a chaotic year that saw downed wires, busted circuit breakers and brushfires disrupt Amtrak operations.

Gone is Amtrak’s White House champion, railfan-in-chief Biden, replaced by Donald Trump, whose one-time adviser, Elon Musk, called Amtrak a “sad situation,” and who proposed replacing the government-owned carrier with private competitors.

Man in suit and blue baseball cap speaks behind a lectern in front of a train with an urban skyline in the background
Former President Joe Biden delivers remarks at an Amtrak 50th anniversary event in Philadelphia in 2021.
AP Photo/Patrick Semansky

Amtrak CEO Stephen Gardner resigned in March 2025, and, in May, Amtrak cut 450 employee positions.

NextGen Acela promises an American rail renaissance in a moment when federally sponsored trains are fighting for their lives, as Biden’s infrastructure ambitions fall to an administration bent on cutting government costs.

These contradictions, however, are nothing new.

Not-so-fast trains

America’s love-hate relationship with fast trains stretches back to October 1964, when Japanese National Railways opened its Shinkansen high-speed line between Tokyo and Osaka.

Japan’s iconic 130-mph bullet train entranced audiences, many of whom saw footage of the new service during televised coverage of the Tokyo Olympics.

High-speed bullet train crosses bridge between skyscrapers
A Shinkansen high-speed bullet train passes through Tokyo.
Richard A. Brooks/AFP via Getty Images

Americans wanted their own bullet train but were reluctant to pay the massive infrastructural costs of a Shinkansen system. When Congress passed the High-Speed Ground Transportation Act of 1965, it prioritized the development of trains over the reconstruction of tracks, power systems and maintenance facilities.

The resulting services underperformed.

On Dec. 20, 1967, a gas turbine train manufactured by United Aircraft topped 170 mph while testing in New Jersey. But when the so-called TurboTrain entered service, it managed an average pace of just 63 mph on the weaving track between New York and Boston.

The electric-powered Metroliner, which began service in 1969, boasted similar potential but rarely held triple-digit speeds in service and broke down so often that its carrier, the Penn Central Railroad, struggled to keep the trains running between New York and Washington.

Historians usually regard these high-speed forays as resounding failures.

But riders loved them.

Technical flaws aside, both the TurboTrain and Metroliner were a hit with northeastern riders, so much so that Amtrak retained the Metroliner brand until 2006, long after it had retired the ‘60s-era trains.

Reflecting in 1999, rail journalist Don Phillips expressed disbelief “that those dogs were actually popular with the riding public.”

The birth of Acela

Amtrak opened a new era of high-speed rail in 2000 when it launched Acela Express.

Derived from France’s acclaimed TGV design, Acela carries passengers at speeds up to 150 mph on the Northeast Corridor.

Like the Metroliner before it, Acela suffered from design problems and mechanical faults, including cracked yaw dampers and brake discs, which temporarily sidelined the trains.

Rail writer Joseph Vranich described Acela as both “Amtrak’s crown jewel” and a “remarkable fiasco.”

And yet riders flocked to the service. Acela became one of Amtrak’s most popular and lucrative trains – so attractive that it lured business travelers off regional airlines.

When Acela entered service in 2000, Amtrak trains claimed just 37% of air-rail traffic between New York and Washington. By 2021, it had 83%. Between New York and Boston, that figure jumped from 20% to 75%.

Passengers stand on platform waiting to board a train
Acela trains are popular and lucrative for Amtrak, in part because they draw so many business travelers.
Anna Moneymaker via Getty Images

Acela 2.0

Now, NextGen Acela takes up the fraught legacy of American high-speed rail. What can we expect of the new train?

NextGen is faster than the original Acela but will not set any world speed records. Its top velocity of 160 mph falls short of global benchmarks set by China’s Fuxing, which hits 217 mph, and Japan’s newest Shinkansens, which reach 200 mph.

With better tracks and signals, NextGen could conceivably ramp up to 186 mph, though such speeds won’t be possible anytime soon.

For now, NextGen will make do with an imperfect corridor. The train’s lightweight design means faster acceleration and lower energy consumption. An enhanced dynamic tilting system will let carriages lean into curves on the corridor’s twisting track, so they lose less speed on turns. The original Acela also tilted, but not as much.

Modern white-and-red bathroom with changing table open
The NextGen Acela bathrooms are more spacious and have more touchless features than the previous design.
Courtesy of Amtrak

The upgraded onboard experience includes winged headrests, seat-side USB ports and 5G Wi-Fi. More importantly, each NextGen train can seat 82 more passengers than its predecessor. When Amtrak’s full fleet of 28 NextGens enters service, sending the first-generation trains into retirement, Acela service capacity will have increased by 4,728 seats.

This figure may be the train’s greatest achievement in a congested region at a time when Amtrak is posting record ridership.

The effects of the Northeast’s post-pandemic passenger surge are nowhere more visible than the Philadelphia rail yard where Biden spoke four years ago. Amtrak is constructing a new maintenance shop beside the Schuylkill River that will service NextGen trains and cement Philly’s role in the railroad’s addition of a million annual seats to its non-Acela corridor trains. Powered by conventional electric locomotives, these slower, cheaper “Regionals” accounted for 77% of corridor ridership in 2024 and will continue to carry the bulk of northeastern passengers.

Meanwhile, a quarter-mile south of the maintenance shop, America’s third-busiest passenger hub, 30th Street Station, is receiving a generational overhaul with a new food court, exterior plaza, shops and underground access to rapid transit.

These projects demonstrate the economic power of fast, frequent trains in Philly and throughout trackside communities of the Northeast. America’s embattled but resilient high-speed rail tradition may never be the world’s best, but even incremental improvements, like NextGen, cannot help but transform the places they serve.

For Amtrak’s corridor region, the stakes have never been higher.

Read more of our stories about Philadelphia.

The Conversation

David Alff is a member of the Empire State Passenger Association.

ref. The new NextGen Acela trains promise faster travel and more seats – but arrive as US rail faces an uncertain future – https://theconversation.com/the-new-nextgen-acela-trains-promise-faster-travel-and-more-seats-but-arrive-as-us-rail-faces-an-uncertain-future-256675