General Mark Rutte will try to prove to Donald Trump in their Thursday meeting that he —and the nearly eight-decade partnership — still matter.

Now an admiral, the French officer is NATO’s Supreme Allied Commander Transformation, one of the alliance’s two most senior ...

NATO’s secretary general, in his first trip to the once-volatile Western Balkans, has underscored the alliance’s “steadfast ...

US President Donald Trump said the hostilities in Ukraine essentially are a war that the North Atlantic Treaty Organization ...

Poland's President Andrzej Duda urged the U.S. to deploy nuclear weapons in his country, according to an interview in the Financial Times. Duda said NATO should shift its defense infrastructure ...

But during the first week of his second administration, Trump increased his demand on NATO members to spend the treaty-stipulated 2% of their gross domestic product on defense spending to 5%. “Last ...

Trump has repeatedly criticized Europe's defense spending and previously threatened to leave NATO if allies didn't pay more.

Trump said on Thursday he's "not so sure" NATO allies would come to America's defense, despite its Article 5 being invoked ...

NATO’s secretary general on Monday pledged the military alliance’s “unwavering” support for Bosnia’s territorial integrity ...