The Kremlin warned of escalating nuclear tensions and said Russia was taking action to protect its security in response.

Russian Foreign Minister Sergey Lavrov on Tuesday urged European politicians to adopt US President Donald Trump’s approach ...

The Kremlin has been rocked by the news that a once staunch ally is considering an exit from a Russian-led military coalition ...

Flight data showed how American and British reconnaissance aircraft flew from England toward Russia on Monday.

BRUSSELS — The United States and NATO rejected key Russian security demands for easing tensions over Ukraine but left open Wednesday the possibility of future talks with Moscow on arms control ...

The UK and Germany lead a NATO meeting to discuss US plans to supply Ukraine with weapons. This comes amidst intensified ...

Putin: U.S. and NATO have "ignored" security demands 01:58. Russian President Vladimir Putin on Tuesday accused the U.S. and its allies of ignoring Russia's top security demands but said Moscow is ...

NATO Secretary General Jens Stoltenberg says Russian pressure and threats against Ukraine are the “new normal” for Europe, as Russia has massed more than 150,000 troops and is prepared to attack.

NATO troops, warships and aircraft are taking part in massive military exercises stretching across the Atlantic as tensions with Russia rise.

Russian President Vladimir Putin said Tuesday the U.S. and its allies, not the Kremlin, are to blame for rising tensions in Europe that have revived talk of war.

Trump-NATO tensions are high but the Europeans were all smiles with the American president who they fear will withdraw from the alliance.

RIGA, Latvia — NATO foreign ministers began talks here Tuesday as the alliance confronts mounting tensions with Russia over its military buildup near Ukraine. U.S. Secretary of State Antony ...