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 Monday that no new date had been set for talks with the United States on the New START nuclear arms treaty, accusing the U.S. of ramping up tensions between the two sides. Talks between ...

After decades of progress on limiting the buildup of nuclear weapons, Russias war on Ukraine has prompted renewed nuclear ...

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'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.

(Photo by Galerie Bilderwelt via Getty Images) One of the more likely scenarios discussed is Russia firing a so-called tactical nuclear ... the United States committing unilaterally to disarmament ...

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.

U.S. reliance on Russian nuclear fuel is substantial, but American companies have some options if Rosatom is hit with sanctions. How did the United States and Russia get entwined in the civilian ...

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

North Korea’s spike in missile testing and development of its nuclear program has prompted South Korea to re-evaluate its defense capabilities, including the potential development of a nuclear ...