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

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

NATO chief Mark Rutte is pushing the Allies to swiftly build up their jet fighters and missiles to avert an all-out war with ...

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

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

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

President Trump’s threats have raised questions about how much leverage the United States has left with Moscow.

While there are currently no plans for Austria to seek membership in NATO, the foundation for joining the alliance may already be in place.

General Christopher Donahue, commander of U.S. Army Europe and Africa, said allies could seize Kaliningrad "in a timeframe ...

The Ukrainian military said a Russian missile strike on a training facility in the north of the country killed at least three ...

Russia’s arms production has significantly ramped up, but NATO still holds key advantages in modern artillery systems and ...

RFE/RL and the Conflict Intelligence Team (CIT), an open-source intelligence group, analyzed Russian and Western weapons production to assess whether Russia really has a twelvefold lead over the US ...