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

Under a 2023 law, a president can’t unilaterally withdraw from the alliance without a two-thirds supermajority in the Senate ...

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

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

European leaders have vowed to rearm the continent at historic emergency talks held after the United States threatened to rip ...

Replacing what the Americans do for the NATO alliance would take money, personnel, time and cooperation. None of those is ...

Higher European defence budgets and a ramp-up of production by military equipment industries are necessary to secure Europe, ...

As Europe prepares for a world without American military aid, the E.U. plans to invest €800 billion on defense.

Officials have pointed to China and Russia as likely culprits, but legal challenges make prosecutions difficult.

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

A move to Europeanize the top NATO command post could be one way for President Donald Trump to signal he wants the United ...

Elon Musk expressed support for the U.S. exiting NATO, arguing it doesn't make sense for America to finance Europe's defense.