KIEV (Reuters) - A top Ukrainian security official on Thursday set out what he said were the four main theories for why a Ukrainian airliner crashed in Iran the previous day killing 176 people, ...

European leaders are gathering in Copenhagen for two summits focused on security, defense and the war in Ukraine. The ...

The 59th Brigade of the Unmanned Systems Forces destroyed the Russian helicopter near the village of Kotliarivka, in Donetsk Oblast.

Poland said Wednesday that, along with NATO allies, it had scrambled warplanes to shoot down multiple Russian drones that entered its airspace during Moscow's latest attack on Ukraine ... Poland's ...

HRABOVE, Ukraine (AP) - International monitors moved gingerly Saturday through fields reeking of the decomposing corpses that fell from a Malaysian airliner shot down over rebel-held eastern Ukraine, ...