The Latest Breaking News from Nuclear Weapons

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

Ukrainian President Volodymyr Zelenskiy said he doesn't think Vladimir Putin is bluffing when he says Moscow would be ready to use nuclear weapons to defend Russia.

An overnight drone strike near the Ukrainian port of Odesa has sparked a massive fire and explosion, hours after the United States vowed to take decisive action and promised “catastrophic consequences” if Russia uses nuclear weapons in Ukraine

Japan has expressed grave concern about Russia’s possible use of nuclear weapons against Ukraine

The Kremlin said on Monday no decision had been taken on whether to seal Russia's borders to stop an exodus of military-aged men fleeing the country, after days of chaotic scenes during its first military mobilisation since World War Two.

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…