Russia is supposed to be allowing regular inspections of its nuclear arsenal. But worsening relations with the U.S. over the war in Ukraine are leading the country to appear guarded.

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 arms ...

The United States said on Tuesday that Russia is not complying with its obligation under the New START nuclear arms treaty to allow inspection activities on its territory. In a statement, a State ...

It follows months of more hopeful US assessments that the two countries would be able to salvage cooperation on limiting ...

Russia’s refusal to engage with the U.S. on resuming nuclear arms inspections has taken another worrying turn, with the State ...

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. The ...

By Michael Callahan, Jennifer Hansler, Haley Britzky and Kylie Atwood, CNN Russia is violating a key nuclear arms control agreement with the United States and continuing to refuse to allow inspections ...

The more important question for Washington is what Russia’s debacle in Ukraine may tell us about the future of nuclear deterrence. As the Congressional Research Service notes in a recent report ...

Concerns over the use of nuclear weapons and ... START treaty between the U.S. and Russia, but that hope is under threat as the first round of talks is postponed. Yet despite their differences ...

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 ...

According to the Sputnik news agency, 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.

as the U.N. continues to encourage nuclear disarmament among the nine nations known to have nuclear weapons. China, France, Russia, United Kingdom and the United States are officially recognized ...