Russia has refused to reschedule a key meeting with U.S. nuclear negotiators that it canceled in November, a U.S. diplomat said on Tuesday, further delaying efforts to replace an expiring nuclear ...

The United States said Tuesday that Russia was not complying with New START, the last remaining arms control treaty between ...

Russia said on Wednesday it wanted to preserve its last remaining nuclear treaty with the United States despite what it ...

Washington says Moscow is not complying with the pact as tensions soar over Russia's war in Ukraine. The treaty, which in its ...

Russia is breaching the terms of the New START nuclear-arms reduction treaty by refusing to allow inspectors on its territory ...

Russia wants to sit down with Pentagon officials for “open and specific” talks on alleged violations of the Intermediate-Range Nuclear Forces treaty, the Russian Defense Ministry said Saturday.

Russia's refusal to allow on-the-ground inspections to resume is endangering the New START nuclear treaty and U.S.-Russian arms control overall, the Biden administration charged on Tuesday.

"Russia's refusal to facilitate inspection activities prevents the United States from exercising important rights under the ...

The treaty allows five of them—the United States, the United Kingdom, Russia, China, and France—to possess nuclear weapons. But it also requires those five to pursue full nuclear disarmament.

The U.S. General said Russia will likely launch nuclear warheads if Ukraine threatens to retake Crimea Brig. Gen. Ryan said a Russian nuclear strike would cause tens of thousands of deaths Russia ...

the Russian Foreign Ministry statement on Monday said that the talks between the foreign ministers of Russia and Iran were postponed after both diplomats agreed. According to the Russian news agency, ...

A Russian hacking team known as Cold River targeted three nuclear research laboratories in the United States this past summer, according to internet records reviewed by Reuters and five ...