Day: January 28, 2026

America’s role in the world is changing. If this wasn’t obvious before, it should be now, following President Donald Trump’s efforts to take over Greenland and his visibly strained relations with traditional allies in Europe and elsewhere.

But how much will the world change if America’s stance is different?

Some scholars of international relations argue that because Washington has been central to global governance for so long, Trump’s “America First” turn – suggesting isolationism on some issues and unilateral action on others – spells the end of the international order as we’ve known it.

The most pessimistic analysts caution that the era of “Pax Americana,” or the long period of relative world calm since World War II due to U.S. leadership, is coming to a close. They forecast a turbulent transition to a more chaotic world.

This view may well prove correct in the long run. But it is too early to say with confidence. As a scholar who studies U.S. foreign policy, I see some grounds for optimism. The world can become a more just, stable and secure place despite the diminishment of American leadership.

For the remaining three years of Trump’s presidency, all bets are off. Trump is famously difficult to predict. That world leaders genuinely believed in recent weeks that the United States could invade Greenland – and still might – should give pause to anyone who thinks they can foretell the remainder of Trump’s second term.

The unprecedented raid on Venezuela and Trump’s oscillation between threatening Iran and calling for negotiations with Tehran provide additional examples of Trump’s volatile foreign policy maneuvers.

But the long-term trends are clear: The United States is losing its enthusiasm (and capacity) for global leadership. The rest of the world can assume that, after Trump, there will continue to be a decline in America’s participation in world affairs. His recent actions suggest America’s security guarantees to others will become more dubious, its markets will become less accessible to foreigners, and its support for international institutions will weaken.

Does this mean a cascade of disorder for smaller nations? Perhaps – but not necessarily.

Are US allies more vulnerable?

Certainly U.S. foreign policy and its wars and other actions abroad have sparked criticism over the past few decades. Still, the prospect of U.S. retrenchment understandably causes anxiety for those who have long sheltered under America’s security umbrella.

Once U.S. forces, spread throughout the globe, have decamped to the continental United States, the argument goes, there won’t be much stopping large countries such as Russia and China from steamrolling their vulnerable neighbors in Europe and East Asia.

This is an overly pessimistic assessment, in my view. It must be remembered that America’s alliance commitments and vast military deployments date from the early Cold War of the 1950s, an era that bears few similarities with the present day. Back then, U.S. forces were needed to deter the Soviet Union and China from attacking their neighbors, who were almost uniformly weak and impoverished following the Second World War.

Today, the European members of NATO and America’s allies in Asia are among the world’s wealthiest countries. These governments are easily rich enough to afford the sort of national militaries needed to deter potential aggressors and uphold stability in their respective regions. Indeed, they can likely do a better job of securing themselves than the United States presently manages on their behalf.

Preserving free trade

Will the world become poorer and perhaps more dangerous if global economic integration falls by the wayside?

This is a reasonable concern given the standard view that free trade leads to economic growth and, in turn, that economic growth can help foster world peace.

But again, it is wrong to assume that the worst will happen. Instead of accepting that globalization is irreversibly in retreat, there is every chance that governments will relearn the benefits of economic integration and defend an open world economy, even absent U.S. leadership. After all, Trump’s trade wars have visibly harmed U.S. firms and consumers, as well as caused friction with America’s allies. Future leaders in Washington and around the world will presumably learn from such fallout.

Finally, there is no reason to conclude that global governance must collapse in the absence of strong U.S. leadership. As Canadian Prime Minister Mark Carney proposed at the recent Davos conference in Switzerland, so-called middle powers, such as Australia, Brazil and Canada itself, have the capacity to rescue the world’s most vital international organizations for the benefit of future generations, and to create new institutions as necessary.

Nations such as Canada, Japan, Australia and the members of the European Union obviously lack the overwhelming military power and economic clout of the United States. But they could choose instead to implement a more collective approach to global leadership.

No safe bets

There are obviously no guarantees that the post-Pax Americana era will be an unbridled success. There will be war and suffering in the future, just as there has been war and suffering under U.S. leadership. The idea of Pax Americana has always rung hollow to some people, including citizens of countries that have been attacked by the United States itself.

The question is whether the international system will become any more violent and unstable in the absence of U.S. leadership and military dominance than it has been during America’s long period of global dominance. It well might, but the international community shouldn’t resign itself to fatalism.

The United States has lost influence. The silver lining is that more countries – including America’s friends and allies – might rediscover their own capacity to shape world affairs.

The post-American era is therefore up for grabs.

Peter Harris is a Non-Resident Fellow with Defense Priorities.

​Politics + Society – The Conversation

When Immigration and Customs Enforcement agents detained Liam Conejo Ramos, a 5-year-old boy who is an asylum seeker, in Minneapolis on Jan. 20, 2026, the photos quickly became a flash point in the Trump administration’s aggressive immigration enforcement activity.

In one image, a man wearing a black uniform holds onto a gray and red Spider-Man backpack that the worried-looking young boy, wearing a blue bunny hat with floppy ears, has on his back.

Meanwhile, ICE and Customs and Border Patrol operations near schools have become increasingly common over the past year, spreading from Texas to Maine. While some parents in Minnesota have set up patrols around schools, there are families choosing to keep their kids home for days or weeks.

We are scholars of migration and children and childhood adversity.

Our research shows that exposure to severe immigration enforcement experiences during childhood carries long-term, significant consequences: These children are twice as likely to suffer from anxiety in young adulthood.

Why this matters

There is well-documented research showing how immigration enforcement has immediate negative effects on children and adults

Children whose immigrant parents are arrested, detained or deported often experience emotional and behavioral problems, including separation anxiety, school absenteeism, hyperactivity and other behavioral issues.

Yet, until recently, it has not been well understood how experiencing or being subjected to immigration enforcement actions affects children once they grow up to become adults.

That said, over three decades of research shows the clear links between traumatic childhood events and mental health problems in adulthood. Studies show, for example, that adults who experienced temporary separation from their parents as children are more likely to say they’ve experienced depression symptoms years later.

We decided to investigate whether a child being exposed to immigration enforcement actions – meaning the arrest of a parent, or detention of a close family member, for example – is associated with mental health problems among young adults who grew up in immigrant families.

How immigration enforcement unravels families

Our study first combined interviews and open-ended survey questions to define what it means to experience severe immigration enforcement during childhood.

We then examined the link between severe immigration enforcement actions and anxiety among 71 young adults – all U.S. citizens age 18 to 34 – who were raised in immigrant households in New York.

As children, all of these young adults witnessed or experienced the arrest, detention or deportation of an immigrant family member or a member of their communities. Three-quarters of the participants identified as Hispanic.

We analyzed our interviews to develop several criteria to determine what constitutes severe exposure to enforcement during childhood, considering factors like whether they witnessed a detention or arrest more than once, and how old they were when these experiences took place.

We found that approximately 26% of the survey participants – all of whom in this group were Hispanic, except one – had severe exposure to immigration enforcement actions during childhood. Not all of them had a parent who has been deported.

Some of these young people had relatives who had drawn-out cases in immigration court, or felt constant fear that their parents might be deported.

When we linked our interviews with survey data, our results were striking.

We found that young adults who experienced severe immigration enforcement actions as children were twice as likely to have anxiety, compared with young adults who did not have this experience when they were growing up.

Exposure to severe immigration enforcement actions as a child was not independently associated with depression as a young adult. But all the survey participants who said they were experiencing depression also reported anxiety symptoms – further evidence of a connection between severe immigration enforcement actions and anxiety among young people.

Lasting impact of today’s policies

Many legal experts and political observers say that the Trump administration’s immigration enforcement tactics in Minneapolis and in other cities are designed to intimidate and instill fear among civilians.

Children are not immune to these tactics, either as witnesses or as targets.

Federal immigration officers deployed tear gas, for example, on students at Roosevelt High School in Minneapolis on Jan. 8. Experiences like this constitute a major adverse childhood event, exposing children and adolescents to significant trauma.

We believe that we can learn from decades of adverse childhood experiences research, which clearly shows the link between childhood adversity and physical and mental health outcomes in adulthood.

The enforcement tactics ICE is using in Minnesota and other places in the U.S. today are likely, our research suggests, going to harm the next generation of U.S. citizens and residents.

As trauma researchers have long known, our bodies keep score over a lifetime. The question facing policymakers is not whether these enforcement tactics will cause lasting harm – our research suggests they would – but what human costs we, as a nation, are willing to bear.

Joanna Dreby receives funding from Russell Sage Foundation

Eunju Lee receives funding from Russel Sage Foundation (PI Dreby).

​Politics + Society – The Conversation