Hyper-partisanship represents a critical variable that undergirds President Donald Trump's stewardship of American foreign policy while bipartisanship, a hallmark of American diplomacy, is in a period of rapid decline. The tenure of the 45th president of the United States is shaping up to be one of the most pivotal and contentious in the history of the Republic. Trump's World: Peril and Opportunity in US Foreign Policy after Obama is an explosive study of the president's foreign policy agenda. It provides an expansive examination of how Trump's America First policy contributes to growing counter-US hysteria that could lead to a new wave of anti-Americanism around the world and explores an important question: When the Trump presidency concludes, what is the likely impact of "Trumpism" on world order, relations with traditional allies, the future of multilateralism, world trade, and American diplomacy?