Ukraine's Security Service struck a Russian oil refinery in a blistering overnight attack that led to travel disruptions.

Russia is constructing a significant listening station in the Kaliningrad region, which borders NATO members Poland and ...

Russia's foreign minister said a group of nations including U.N. Security Council members should guarantee Ukraine's security ...

NATO aircraft scrambled from Romania following a large-scale Russian attack on across Ukraine overnight, including in the ...

Lithuania shared images of a new series of border defenses underway that are designed to stop a Russian advance into NATO.

Two German fighter jets were scrambled to the Romanian-Ukrainian border on Tuesday night in response to a Russian drone ...

As NATO defence ministers met during a virtual get-together, Russia said it had to be part of any discussion on security ...

Ukrainian officials say more than 19,000 children have been unlawfully deported to Russia or occupied areas, with reports ...

The incident highlights the continuing volatility near NATO's eastern border as Russia intensifies aerial attacks on Ukraine.

The U.S. has pivoted policy to focus more northward. In 2018, it resuscitated the U.S. Navy's Second Fleet to counter Russia, ...

Officials in Romania announced Wednesday that NATO deployed two German fighter jets in its airspace in response to a Russian ...

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