Ukraine

President Joe Biden warned Russia Tuesday that any use of a tactical nuclear weapon would be "an incredibly serious mistake."

A Ukrainian official says that Ukrainian guerrillas have staged several explosions in a Russia-held southern city. (Oct 25) AP

The U.S. says it rejects the "false claim" that Ukraine is getting ready to detonate a dirty bomb. (Oct 24)

A Russian warplane crashed into a residential building in the Siberian city of Irkutsk Sunday, killing both crewmembers - the

The Pentagon says that despite the denials, Russia is using Iranian-made drones with help from Iranian trainers in Crimea, and

A small recaptured Ukrainian village, just few kilometers from the Russian border, is trying to figure how to adjust back

U.S. Defense Secretary Lloyd Austin welcomed his Estonian counterpart, Hanno Pevkur, to the Pentagon for talks Monday. (Oct 19) AP

Emergency workers near the frontline in eastern Ukraine are having to work in dangerous conditions amid heavy Russian shelling. (Oct

As Russian airstrikes cut water and power and expanded its campaign to drive Ukraine into the cold and dark, the

Ukraine's nuclear operator said Russian shelling cut power again to the Zaporizhzhia Nuclear Power Plant. (Oct 18) AP