Over the past two weeks, U.S. President Donald Trump, Vice President JD Vance and other U.S. leaders have threatened a dramatic shift in U.S. foreign policy. In a series of statements that could upend decades of ties between the United States and Europe, the Trump administration has indicated that Washington will no longer guarantee European security, most significantly regarding the threat from a revanchist Russia with which Washington is now seeking greater alignment — a pronounced about-face in U.S. foreign policy. Trump and other top U.S. officials had already made many public statements calling into question the strength of trans-Atlantic ties, not least by aggressively pushing to take territory from NATO ally Denmark and rebuking multiple European leaders while praising their far-right political challengers. Europe is hardly the only continent on the receiving end of U.S. foreign policy shocks.