May 27, 2026

U.S. Military Posture and Implications for European Security

By: Andrea Kendall-Taylor and Jim Townsend

Over the last several weeks, U.S. allies have been trying to make sense of a dizzying series of announcements about America’s military posture and broader role in Europe. First came reports that the Trump administration planned to withdraw roughly 5,000 troops from Germany following a public dispute with Chancellor Friedrich Merz over the war with Iran. Shortly thereafter, the Pentagon paused the deployment of thousands of U.S. troops to Poland—a move that blindsided officials in Warsaw, particularly because Poland has consistently positioned itself as a model ally. Then, in another abrupt reversal, President Donald Trump announced that the United States would instead send an additional 5,000 troops to Poland, though it remains unclear whether these are new forces, previously paused deployments, or units being shifted from elsewhere in Europe.

These announcements hung heavy over last week’s NATO Foreign Ministers meeting in Sweden, where Secretary of State Marco Rubio signaled that Washington would step back from playing the leading role in negotiations between Russia and Ukraine after months of stalled diplomacy. Rubio also emphasized that European allies would need to shoulder more of the burden for their own defense, reinforcing the sense that the United States is narrowing the scope of its role in European security.

At a moment when Russia continues to pressure NATO’s eastern flank, the debate is no longer whether the United States will reduce its role in Europe but how fast, how coherently, and with what consequences for deterrence and alliance cohesion.

To help us unpack all of this, Douglas Lute and Justyna Gotkowska join Brussels Sprouts this week to discuss.

Justyna Gotkowska is deputy director and head of the Security and Defence Department at the Centre for Eastern Studies (OSW) in Warsaw.

Ambassador Douglas Lute is chair of BGR Group’s International and Trade Practice and its Defense and Critical Technologies Practice. He is a retired U.S. Army lieutenant general and formerly served as the U.S. permanent representative to NATO.

    More from CNAS

    View All Reports View All Articles & Multimedia