"Russian nuclear strategy appears to be at an inflection point," an analysis published by the Royal United Services Institute said.

On the ground, the reaction is one of disbelief, defiance and anxiety. CNN reported from Sloviansk, a city first seized by ...

What might deliver a ceasefire? Not a performative meeting that allows Vladimir Putin to wriggle out of sanctions. Instead, ...

What might deliver a ceasefire? Not a performative meeting that allows Vladimir Putin to wriggle out of sanctions. Instead, ...

For decades, the threat of nuclear conflict between the U.S. and the Soviet Union hung over humanity — and occasionally the superpowers edged toward the brink, as with the Cuban missile crisis. But ...

Although Alaska is the closest part of the United States to Russia and the distance between the mainland parts of the two countries is about 88 kilometers, both Vladimir Putin and Donald Trump will ...