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

Allies of the United States see a group chat about attack plans by top U.S. officials that accidentally included a journalist as a jaw-dropping security breach.

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

Security and defence analyst Michael Clarke has just been answering your questions - on the Trump security leak, the Ukraine war and Russia-US ceasefire talks. Watch the Q&A below.

Donald Trump has spoken about talks in the Saudi city of Riyadh today as efforts to end the Ukraine war continue. Volodymyr Zelenskyy has also given a revealing interview. Follow the latest ...