The “massive attacks” have caused power outages across Ukraine, the country’s state grid operator said on Saturday. Ukrainian ...

Without the New START treaty, which caps the number of deployed nuclear warheads at 1,550 on each side, there will be no ...

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 ...

A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense ...

The Kremlin says it regretts the expiration of the last remaining nuclear arms pact between Russia and the United States, ...

American negotiators trumpeted plans for a prisoner swap, but that was small recompense for months of diplomatic efforts by ...

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

WASHINGTON, Feb 5 (Reuters) - The United States and Russia are closing in on a deal to observe the New START nuclear arms ...

The last remaining nuclear arms control treaty between the United States and Russia is set to expire Thursday, leaving the ...

As the second round of Ukraine peace talks in less than two weeks ran into a second day Russian and Ukraine negotiators said ...

The New START treaty terminated Thursday, leaving no caps on the two largest atomic arsenals for the first time in more than ...

The Kremlin says Russian and U.S. negotiators have discussed the expiration of their last remaining nuclear arms pact ...