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 ...

Officials say Russian glide bombs and ballistic missiles have struck a Ukrainian prison and a medical facility as Russia’s ...

As the front lines froze, and air defenses got better, Russia and Ukraine pivoted away from close bombing runs to standoff ...

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

U.S. President Donald Trump has given Russian President Vladimir Putin a new deadline to end the war in Ukraine.

Spain is not the only sceptic among NATO’s ranks. Slovakia, while less vocal, has also expressed ambiguity towards the 5% ...

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 ...

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

Officials say Russian glide bombs and ballistic missiles have struck a Ukrainian prison and a medical facility as Russia’s ...

As NATO recalibrates its deterrence strategy, the return of US nuclear weapons to Britain is a powerful signal -- one aimed ...

Polish and Swedish military aircraft were scrambled in response to a large Russian drone and missile attack launched across ...