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 scrambled Polish MiG-29 jets, while Russia sent a Su-35S fighter, which allegedly breached Estonian airspace. The incident highlights growing tensions between Russia and NATO amid Ukraine ...

NATO is unlikely to accede to Russian demands for a say-so on who joins the military alliance, so the best-case scenario, experts say, is that both parties just keep talking.

As the world grapples with multiple geopolitical flashpoints — from the fallout of strikes in Iran and stalled Ukraine-Russia ...

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 ...

Vladimir Putin and Russia are threatening the world, not just Ukraine. Here's how NATO can respond. NATO needs to prepare for the reality of a more aggressive Russia in the face of tensions with ...

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.

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 ...

KYIV, Ukraine — Tensions between Russia and the West ratcheted up on Friday as Moscow announced plans to test nuclear-capable missiles and held war games on NATO’s doorstep in Belarus, while ...

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.