Nuclear weapons can produce some of the most devastating destruction of any device ever created by humankind -- so what ...

The nuclear-powered Oscar II-class submarine sank after a torpedo exploded ... Throughout the Cold War, there had been a number of tragic accidents involving Soviet submarines due to lax safety ...

Highly publicized events such as the Fukushima Daiichi, Chernobyl, Goiania and Three Mile Island nuclear accidents; nuclear bomb testing in the Pacific; and the sinking of the Kursk nuclear submarine ...

WASHINGTON--China's newest nuclear-powered attack submarine sank earlier this year, a senior U.S. defense official said on Thursday, a potential embarrassment for Beijing as it seeks to expand its ...

SEOUL--North Korea has launched its first operational “tactical nuclear attack submarine” and assigned it to the fleet that patrols the waters between the Korean peninsula and Japan ...

UK Prime Minister Sir Keir Starmer has visited the crew of HMS Vanguard after the submarine returned to UK waters after months of undersea service. The nuclear-armed submarine had been patrolling ...