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 ...

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 ...

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 ...

Now there’s almost no chance Russia or China ... Kim has ignored US attempts to return to nuclear disarmament talks and brought along his daughter for her state media debut to attend the ...

Russia and Iran each have recently warned about the dangers of not reviving nuclear talks with Iran. But separately each says Western countries appear not to be eager to resume the negotiations ...

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 ...

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 ...

who also was the former US military attache to Russia, told Insider, with the goal of not only taking out Ukrainian troops but also forcing Kyiv into surrendering to avoid a nuclear holocaust ...

Dmitry Medvedev made the statement one day before Western leaders meet to discuss giving more military support to Ukraine.

The attack came amid tension between Iran and the West over Tehran's nuclear activity and its supply of arms - including long-range "suicide drones" - for Russia's war in Ukraine, as well as months of ...

Russia’s top diplomat warned the US Tuesday against ordering a so-called “decapitation strike” targeting President Vladimir Putin. Foreign Minister Sergey Lavrov talked about the alleged ...