The Latest Breaking News from Nuclear Weapons

This century’s worst-case climate scenario isn’t global warming of 4 or even 5 degrees Celsius. It’s a nuclear winter that would trigger global cooling up to 12 or 13 degrees C.

WASHINGTON — The U.S. and Canadian defense chiefs discussed upgrades to North America’s missile-warning system as the Biden administration seeks to slow North Korea’s atomic ambitions, open better communications with China and dial back fears the Kremlin might use nuclear weapons in its war in Ukraine.

Turkish President Tayyip Erdogan said he was informed following the U.S. - Russia talks held earlier this week in Ankara that neither party would use nuclear weapons, according a readout of his comments to reporters.

Most members of the Group of 20 (G20) nations on Wednesday deplored the war in Ukraine in the strongest terms, saying the conflict was “hurting the global economy.” "Most members strongly condemned the war in Ukraine," the declaration said. The declaration acknowledged “there were other views and different assessments” and…

It is now nearly nine months since Russia invaded Ukraine. A war that should never have happened, and which Moscow hoped would be over in a matter of days, threatens to drag on endlessly. Estimates of military and civilian deaths vary wildly but are in the tens of thousands on…

Ukrainian President Volodymyr Zelenskiy stressed to the leaders of the world's wealthiest countries on Tuesday that now is the time to stop Russia's war Ukraine under his proposed peace plan. Zelenskiy appeared via videolink at the G20 summit, on the Indonesian island of Bali, overshadowed by the war in Ukraine…

There are encouraging signs at the G20 meeting in Bali for a consensus that Russia's war against Ukraine is not acceptable and that nuclear weapons must not be used, German Chancellor Olaf Scholz said on Tuesday.

Kyiv has welcomed reported Chinese comments criticising threats to use nuclear weapons, with Russia's invasion of Ukraine in the spotlight.

A Western-led push to condemn Russia's invasion of Ukraine dominated Tuesday's Group of 20 (G20) summit on the Indonesian island of Bali where leaders of major economies grappled with a dizzying array of issues from hunger to nuclear threats.