The Russian Il-20 did not file a flight plan for its "reconnaissance mission" in international airspace, Poland's military ...

Poland scrambled fighter jets and an early warning aircraft, and put its ground air defenses and radar systems on "the ...

Lithuania accuses Belarus and Russia of a "deliberate escalation of hybrid warfare" as balloons shut down major airport.

NATO and U.S. allies try to assuage fears over bolstering Russia as the Pentagon announces a U.S. troop reduction in eastern ...

The Russian test launch of an intercontinental ballistic missile and a nuclear-powered torpedo capable of triggering ...

NATO fighter jets intercepted a Russian spy plane over the Baltic Sea on Tuesday, highlighting escalating East-West tensions ...

U.S. troops withdrawing from Romania spark Republican opposition amid Russia-Ukraine war tensions and concerns over weakened ...

The Eastern Flank Defense Line envisions that in a future fight, NATO will blunt any Russian offensive with an unmanned zone ...

Russian jets violated NATO airspace over Lithuania for 18 seconds during suspected refueling exercise. Nation's president ...

The onslaught led to power cuts in all regions of Ukraine as Russia seeks to disrupt electricity and heating supplies as ...

Russia appears to have been deterred by NATO's firm response last month to incursions into Polish and Estonian airspace, but ...

The future of Ukraine and Russia, of European security, and of US-Russian relations now all hang on a few small half-ruined towns in the northwestern part of Donetsk province. Indeed, given the ...