Foreign Affairs

Trump’s Disruptive Europe Policy Threatens Long-Term U.S. Global Leadership

By National Security Desk | January 22, 2026

President Trump’s aggressive posture toward Europe fractures decades-long alliances, jeopardizing U.S. national security and leaving future leaders with a steep diplomatic repair job.

Barely into the Biden administration, the message was clear: “America is back.” But how long can that promise hold when President Trump’s second term continues to unravel America's traditional alliances with Europe—alliances built on shared values of freedom and sovereignty that have protected Western civilization for over seventy years?When American Leadership Turns Into UnpredictabilityPresident Trump has not only rejected the transatlantic partnerships that secured peace after World War II, but he also openly threatened those same allies with demands and insults. From calling Denmark “ungrateful” despite its sacrifices to mockingly proposing the purchase of Greenland—a sovereign territory—the president’s actions reflect...

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