There is considerable skepticism about U.S. President Donald Trump's commitment to uphold the post-1945 liberal international order crafted under American leadership and underwritten by U.S. military power, economic heft and geopolitical clout. Trump's pre-election statements on trade, immigration, alliances and nuclear policy in particular seemed to question these four critical pillars of established U.S. policy.

While some lament "The End of the Anglo-American Order," others are trying to discern the outlines of Trump's new world order. Former Soviet leader Mikhail Gorbachev, jointly responsible for the peaceful end of the Cold War, thinks "the world is preparing for war."

Clearly, history likes irony: The president with the least previous foreign policy interest and experience could end up having the biggest impact on global affairs in a century.