Trump, famously critical of the alliance the U.S. had led for decades, has already cast doubt across Europe on how reliable ...

President Trump is on a collision course with Republican defense hawks over the question of whether the United States should ...

The North Atlantic Treaty Organization is widely considered the largest peace-time military alliance in the world. The 32 ...

The NATO allies pulling out of a treaty banning the use of landmines said it sends the message they'll use whatever they need ...

We’re at a moment in time where everything is important, we’re lacking everything, and so we have to be quite astute,” said ...

Fighter jets from NATO countries intercepted two long-range U.S. heavy bombers in intensive Arctic drills, as tensions ...

The director of a NATO research group told BI the crisis scenario she's most worried about at present.

NATO Secretary-General Mark Rutte is praising President Donald Trump for motivating fellow transatlantic alliance members to ...

Trump has repeatedly expressed his contention that European countries have been taking advantage of the U.S. by not spending more on defense.

The move is being discussed as part of a possible restructuring of combatant commands that would help the Defense Department ...

The F-35 was meant as a one-size-fits-all fighter that could be used across NATO. But strained U.S.-Europe relations are ...

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