Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

European powers are examining how to their bolster nuclear arsenals to guard against Russia amid questions about America’s commitment to NATO.

North Korea is producing enough nuclear material a year for up to 20 weapons, the South's President Lee Jae Myung said on ...

South Korean President Lee Jae Myung said Wednesday that North Korea is producing enough nuclear fissile material to build ...

The New START treaty, which limits nuclear weapons, is due to expire in February.

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from ...

By Francois Murphy VIENNA, Jan 16 (Reuters) - Regional fears of a U.S. attack on Iran have eased after President Donald Trump ...

Sergey Karaganov, a former adviser to Vladimir Putin, warned that Russia could deploy nuclear weapons if it came close to ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.

Speaking at Davos, Dario Amodei said Washington’s decision to allow Nvidia to manufacture AI chips had “incredible national ...

AI boss says chip sales to China ‘like selling nuclear weapons to North Korea’ - Anthropic CEO says Trump administration’s ...

During the Cold War the U.S. considered putting nuclear weapons on balloons and letting them float into enemy territory for a strike.