The Latest Breaking News from Nuclear Weapons

The Kremlin said on Monday it was in "sporadic" contact with the United States on issues related to nuclear arms, days after President Vladimir Putin said he was "not bluffing" over his readiness to use such weapons if Russia felt its territorial integrity was under threat.

"Any use of nuclear weapons will be met with catastrophic consequences," says a U.S. National Security Advisor

Russian businessman Yevgeny Prigozhin, an ally of President Vladimir Putin, said on Monday he had founded the Wagner mercenary group and confirmed its deployment to countries in Latin America and Africa. Follow our live blog for all the latest developments. All times are Paris time (GMT+2).

Untrained conscripts being sent directly to Ukraine frontline, Kyiv claims; UK announces new package of sanctions

The ramped-up nuclear rhetoric by Russian officials comes after several significant losses in Ukraine this month.

Japan has decided to ban exports of chemical weapons-related goods to Russia in an additional sanction against Moscow over its invasion of Ukraine, and is "deeply concerned" about the possible use of nuclear weapons, Chief Cabinet Secretary Hirokazu Matsuno said on Monday.

President Vladimir Putin says he will defend Russia's territory with every means at his disposal, and it's put the threat of nuclear war back into focus.

The United States would respond decisively to any Russian use of nuclear weapons against Ukraine and has spelled out to Moscow the "catastrophic consequences" it would face, US National Security Adviser Jake Sullivan said on Sunday. Sullivan's remarks represented the latest American warning following the thinly veiled nuclear threat made…

The United States would respond decisively to any Russian use of nuclear weapons against Ukraine and has spelled out to Moscow the "catastrophic consequences" it would face, U.S. National Security Adviser Jake Sullivan said on Sunday.