A dubious post that spread on X became the basis of false claims that Iran’s leadership had declared it a nuclear power.

These weren't concepts that lived only on paper. Every weapon on this list reached at least the prototype or testing stage.

A study made public this month by the National Nuclear Security Administration concluded that the U.S. stockpile of weapons-grade plutonium is aging but not at a rate that is affecting nuclear ...

A nuclear safety watchdog group says it has obtained formerly hidden information that bolsters arguments against building ...

Hiroshima on Thursday marked the 81st anniversary of the U.S. atomic bombing of the western Japanese city, with its mayor ...

A South Korean report says North Korea is combining tactical nuclear and conventional weapons to create a more heavily armed ...

To the editor: As Mari Yamaguchi pointed out in this article, the risks of nuclear conflict remain high, with more than 12,000 nuclear weapons stockpiled globally, some many times more powerful than ...

Israeli prime minister Benjamin Netanyahu sparked controversy after calling the UK “Islamic Republic of Britain” in a recent interview. “You might call Britain the ...

President Trump’s best option to stop Iran from rebooting its nuclear weapons program is to take out the entrances to Pickaxe ...

Israeli Prime Minister Benjamin Netanyahu has launched a sharp rebuke against the UK, calling it the “Islamic republic of ...

Japan's Takaichi left open a review of a ban on nuclear weapons entering the country, a move that could revive South Korea's ...

A nuclear safety watchdog group says it has obtained formerly hidden information that bolsters arguments against building ...