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 ...

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

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

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 ...

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 ...

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

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

Trump says Russia tariffs will be imposed in 10 days * Ukrainian drones strike train station, rail infrastructure amid ...