U.S. World Leadership is Fading, and Trump is Accelerating It

The End of an Era

For nearly 80 years, the United States has underwritten a global order based on rules and institutions that shaped how nations interact. That world is changing rapidly. According to Mark Leonard, cofounder of the European Council on Foreign Relations, America’s grip on global leadership is slipping, and the consequences could be severe for addressing shared crises like climate change and regional conflicts.

Leonard recently laid out this argument in Foreign Affairs, discussing the shift with NPR’s Danielle Kurtzleben. His central claim is stark: the U.S.-led, rules-based order that emerged after World War II and solidified after the Cold War is fading. And while erosion has been happening for years, one figure is acting as a massive accelerant.

What Made the Old Order Work

Understanding what we’re losing requires understanding what worked. Leonard points to Henry Kissinger’s framework for world order: a set of rules that major powers agree to live with, even if reluctantly, combined with a balance of power to enforce those rules.

The American-sponsored order delivered relative stability. Yes, there were proxy wars, regional conflicts, and institutional shortcomings. But the rules mattered. They created predictability. Nations knew where they stood. International organizations, while imperfect, provided forums for resolving disputes without warfare.

Then came Trump’s return to power. His administration has withdrawn from the World Health Organization, questioned America’s commitment to NATO, threatened to annex Greenland, and made clear its skepticism toward institutions like the World Trade Organization. These aren’t minor policy tweaks. They’re ideological breaks with decades of American foreign policy.

“Even in the imagination of science fiction writers, you wouldn’t have these as credible story lines,” Leonard observed during the interview. Yet they’re happening.

The Deeper Shift

But Trump alone isn’t the problem, and that’s what makes this moment so consequential. Leonard argues that Trump is channeling a real sentiment in American culture. Across the political spectrum, there’s growing skepticism about whether the U.S. should bankroll global institutions or play world policeman. Americans increasingly prioritize nation-building at home.

This reflects a fundamental shift in American priorities, not merely a personality-driven detour. Even if a different president takes office in 2028, the structural changes underway won’t simply reverse. Other countries are already hedging their bets, reducing dependence on American security guarantees and building alternative relationships.

For international leaders grappling with this new reality, Leonard offers pragmatic advice: expect the unexpected. The old playbook of preserving predictable order no longer applies.

Preparing for Unpredictability

Instead of assuming stability, world leaders must develop flexibility and maintain diverse relationships across multiple power centers. This means rethinking security entirely. It’s no longer just about military strength in conventional terms. Food security, health infrastructure, cybersecurity, and supply chain resilience have become weapons and vulnerabilities.

This broader conception of security reflects how fragile modern systems actually are. A cyberattack can cripple power grids. Food export disruptions create political instability. Pandemics expose the limitations of nationalism. Countries that recognize these interconnected threats will be better positioned to defend themselves.

The irony is stark: a more multipolar world, without clear American hegemony, may actually force nations to take responsibility for their own resilience. Whether that results in greater stability or increased competition remains uncertain.

What’s clear is that the post-World War II consensus has fractured. Nations are scrambling to adapt. Some will succeed by building robust alliances outside traditional Western structures. Others may find themselves isolated and vulnerable. The global order that once seemed permanent is dissolving in real time, and the outcome depends on how quickly leaders recognize this isn’t a temporary disruption but a permanent transition.

Source: NPR

If America’s global role continues declining, which nations will fill the vacuum, and will their vision for world order be any more stable?