The Latest Breaking News from Nuclear Weapons

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.

US national security adviser says: ‘Any use of nuclear weapons will be met with catastrophic consequences for Russia’

North Korea fired a short-range ballistic missile Sunday toward its eastern seas, extending its weapons testing as a U.S. aircraft carrier visits South Korea for joint military exercises.

South Korea called an emergency National Security Council meeting where members denounced the launch as a clear violation of U.N. Security Council resolutions.

Ukraine and Russia traded accusations on Sunday of attacks on civilians in southern Ukraine as Russian-occupied territories hold referendums on joining Russia that Western leaders have dismissed as staged attempts to annex more territory.

The Kremlin's statements on the possible use of nuclear weapons are "absolutely unacceptable" and Kyiv will not give into it, Ukraine's Foreign Minister Dmytro Kuleba said early on Sunday.

Russia's top diplomat on Saturday said regions of Ukraine where widely-derided referendums are being held would be under Russia's "full protection" if they are annexed by Moscow, amid fears Russia could further escalate the conflict and even use nuclear weapons.