While the global spotlight recently focused on diplomatic tensions between the United States and Denmark over Greenland, a quieter but equally significant development has been unfolding farther north.

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 ...

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

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

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 ...

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 ...

NATO has reportedly escalated its alert status, sending fighter jets to the "highest state of readiness" following Russia's severe offensive actions in Western Ukraine. The attacks come just after ...

As NATO defense ministers met in Brussels, Secretary General Jens Stoltenberg said he had not seen evidence of a Russian troop withdrawal from the Ukrainian border, but there were still “grounds ...

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.

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.

Poland is poised to secure a $4 billion U.S. loan guarantee to modernize its military, enhancing defense amidst escalating ...

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