Sweden sent its Gripen jets to a NATO air defense mission in Poland, shifting from only conducting missions over its own ...

NATO Secretary-General Mark Rutte warned the United States and Europe on Wednesday against any temptation to "go it alone" on ...

President Donald Trump has repeatedly threatened to leave the NATO alliance should member states fail to increase defensive ...

U.S. and Lithuanian forces found the vehicle piloted by four missing U.S. soldiers Wednesday who vanished during a training ...

NATO seemingly walked back comments from its chief that suggested four U.S. soldiers who went missing while training in ...

Europe's NATO members may publicly express confidence in the continent's relationship with the U.S., but many European ...

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

NATO Secretary-General Mark Rutte has warned Russia that the alliance would always stand by Poland or any other ally and that ...

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

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

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

NBC News joined a NATO flotilla as it sailed the icy sea hunting Russian saboteurs accused of targeting undersea cables.