A nuclear treaty first signed in 2010 is expiring this week. If it's not replaced, experts say a global arms race could be in ...

The U.S. and Russia agreed on Thursday to re-establish high level military-to-military dialogue following a meeting between ...

The last major nuclear arms control treaty between Russia and the United States expires on Thursday, ushering in an era ...

MOSCOW, Feb 5 (Reuters) - Russia expelled a German diplomat on Thursday in response to what it said was Berlin's groundless ...

Little has been made public so far, but negotiators were expected to talk about the fate of Ukrainian territory in the east ...

WASHINGTON, Feb 5 (Reuters) - The U.S. military said that Washington and Moscow on Thursday agreed to reestablish high level ...

The United States and Russia agreed Thursday to reestablish high-level, military-to-military dialogue following a meeting ...

The expiration of the last remaining nuclear treaty between the United States and Russia on Thursday has sparked fears about ...

U.S., Russian and Ukrainian negotiators are meeting in the United Arab Emirates, but Russia continues to pummel Ukraine and ...

New START treaty expires, ending nuclear arms limits between U.S. and Russia for the first time in more than 50 years. No ...

Since the collapse of the old Soviet Union, Russia has cut a substantially diminished figure on the international stage.

Trump's Greenland focus highlights urgent Arctic security needs as Sen. Sullivan reveals new U.S. defenses against ...