Emerging from the unyielding cold of the Arctic, Russia has successfully tested its most audacious weapon yet: the ...

A missile-shaped streak arced across the Russian sky, marking the latest test of a weapon that has captured global attention and concern. Russia's new nuclear-powered cruise missile, known as the ...

Top Ukrainian officials have called on the United Nations to take immediate action to prevent a "nuclear catastrophe" by demilitarizing Russian forces that have occupied the Chernobyl exclusion zone. ...