President Trump's Truth Social announcement that the US will pursue new nuclear weapons testing raises more questions than it ...

The US accused China of secret nuclear tests, banned under international agreement, that were building toward tests of larger ...

France has an estimated 290 nuclear warheads, most of which are launched from submarines.

North Korea is the only country known to have conducted a nuclear explosive test in the 21st century.

North Korea’s interest in nuclear weapons was decades in the making—but its first earnest attempt during the 1990s was stymied by external factors. On October 9, 2006, North Korea conducted its first ...