An unidentified drone suspected to have come from Belarus entered into Lithuanian airspace on Monday, according a local ...

NATO aircraft were scrambled Sunday night to respond to a Russian attack on Ukraine, the Polish military said Monday.

Business Insider got access to a NATO AWACS flight for an eight-hour surveillance mission over Eastern Europe.

NATO's commitment to spend 5% of GDP on defense by 2035 was meant to unify the alliance, but it's revealing dangerous fault ...

A Norwegian P-8A "Poseidon" flew close to Russia's major submarine hubs in the Murmansk region before heading to the ...

NATO's enhanced ground capabilities in the Baltic region spark Russian warnings as military focus intensifies on Kaliningrad ...

NATO remains vigilant. The North Atlantic Alliance said that in connection with the Russian-Belarusian military exercises ...

Russian President Vladimir Putin's war in Ukraine and President Trump's tough stance on NATO have 'energized' the alliance ...

"I am very open to having a public debate about the future of Austria's security and defense policy," Austria's Foreign ...

In a statement, NATO said NATO Secretary General Mark Rutte will be in Washington on Monday and Tuesday and meet with President Trump and key administration officials.

Another attempt at peace talks between Ukraine and Russia is on the horizon amid Russia's continuous assault on Ukraine.

NATO Secretary-General Mark Rutte is set to meet President Donald Trump this week on the heels of the U.S. leader announcing ...