The post-WWII global framework, including international law, was a fragile agreement primarily enforced by the US. Its erosion is leading to a "might makes right" reality where nations like Russia, China, and the US act unilaterally in their perceived self-interest, abandoning the pretense of shared rules.

By dismantling the post-WWII global order, the Trump administration forces allies to realign with China. As the U.S. retreats from global partnerships, China is positioned to dominate key industries like renewable energy, making the 21st century "the China century" by default as the world moves on without America.

America's unpredictable, "law of the jungle" approach doesn't embolden adversaries like Russia or China, who already operate this way. Instead, it forces traditional allies (Canada, Europe, Japan) to hedge their bets, decouple their interests, and reduce reliance on an unreliable United States for upholding international law.

The true 'mega risk' is not a single policy but a fundamental shift in the US global role. The post-1945 global economic system, including free trade and dollar dominance, has been built on a foundation of US security and leadership. If that leadership is withdrawn, the entire international order could change fundamentally.

Despite claims of being 'realist,' Trump's foreign policy is fundamentally anti-realist. By alienating allies, cutting R&D, and acting imprudently, it undermines the very sources of long-term American power—partnerships and technological superiority—that a true realist would seek to preserve.

The long-standing Monroe Doctrine is being superseded by a "Trump Doctrine." This new worldview prioritizes hemispheric dominance, unilateralism, and proactive intervention for specific economic and security interests (e.g., controlling immigration, securing vital assets), fundamentally changing how America views its sphere of influence.

Marco Rubio articulated Trump's foreign policy as a 'spheres of influence' model, a modern Monroe Doctrine. This framework cedes global leadership, envisioning a world where the U.S. controls the West, Russia controls its territory and Europe, and China controls Asia. This marks a fundamental shift from America's post-WWII role as a global superpower to a regional one.

Stephen Walt defines Trump's foreign policy as 'predatory hegemony,' a unique strategy where a dominant power uses its leverage to extract concessions and tribute from everyone, including long-standing allies. This departs from traditional great power politics, which is typically predatory only toward rivals.

Trump is not an isolated phenomenon but a vessel for a broader, international right-wing movement. His talking points on immigration and 'special operations' mirror the language used by authoritarians like Viktor Orbán in Hungary and Vladimir Putin in Russia. This global playbook is tested in 'laboratories of autocracy' worldwide before being deployed in the U.S.