US allies in Europe are worried that American support for Ukraine is fickle, and that the Trump administration will cut its ...

But after a flurry of concern, Europe’s major powers rolled over and went back to sleep. Moscow’s full-scale invasion of the rest of Ukraine, in 2022, got their full attention, leading to increases in ...

Most NATO allies promised to ramp up defense spending and reaffirmed their "ironclad" commitment to mutual defense. But there are lingering concerns over the scale and scope of US engagement.

CHARLES KUPCHAN is Professor of International Affairs at Georgetown University and a Senior Fellow at the Council on Foreign Relations. His most recent book is Isolationism: A History of America’s ...

While NATO’s relevance is being questioned by some in Washington, officials in Brussels remain confident the alliance remains strong, pointing to a stark divide between rhetoric and reality.

The three-day meeting is touted as a time to celebrate the alliance’s 75th anniversary. But gathered leaders face serious questions that will affect NATO’s future.

Across Asia and Europe, the event stoked concerns about American stability, both domestically and on crucial foreign policy issues like Washington’s commitment to alliances.

NATO Secretary-General Jens Stoltenberg cautioned member countries against allowing a divide between the U.S. and Europe if Donald Trump returns to office.

NATO is the foundation, though not the sole focus, of U.S. engagement in Europe. At the July summit, the Alliance must turn military plans into functional realities.

The Turkish leader is complicating a major step in the showdown with Russia, looking to extract concessions from NATO and the United States.

President Biden spoke Tuesday with NATO Secretary General Jens Stoltenberg and emphasized the United States’s commitment to the alliance, the White House said.In the call, Biden thanked Stolte… ...