The close adviser to President Donald Trump has publicly supported the United States withdrawing from the military alliance.

Europe is staring down the barrel of a stark new reality where the United States being the backbone of NATO – the alliance ...

Italian Prime Minister Giorgia Meloni has suggested NATO's Article 5 protection could be extended to cover Ukraine even if it ...

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

In his ongoing like-hate relationship with NATO, President Donald Trump fired off another series of brickbats Thursday, ...

NATO isn’t America’s only alliance in jeopardy ... was to assume Washington was irretrievably departing. Instead, to protect the West’s overall security and shared concerns about rising ...

U.S. President Donald Trump cast doubt on Thursday on his willingness to defend Washington's NATO allies, saying he would not ...

The president has discussed possibly favoring members of the alliance that spend a set percentage of their GDP on defense, ...

Trump claimed NATO allies wouldn’t defend the U.S. if attacked, despite Sept. 11 being the only time the defense guarantee ...

Asked about NATO Article 5 commitment, Trump says U.S. "not going to defend" allies that fail to meet his spending ...

Trump’s nominee to serve as the U.S. ambassador to NATO said his commitment to the alliance is “ironclad.” Trump contradicted ...

Uneasiness grows over continued U.S. support for the 75-year-old alliance as Trump casts doubt on support from other members ...