The U.S. Navy carried out four scheduled unarmed missile tests of the Trident II D5LE off the coast of Florida last week.

The missile was launched from a specially designed rail-based mobile launcher, providing cross-country mobility.

The U.S. and China possess the world's second- and third-largest nuclear arsenals, with 5,177 and 600 warheads, respectively, ...

More than 2,000 nuclear weapons have been tested worldwide to date. The test sites remain contaminated, and many residents ...

America’s Trident D5 missiles represent a bedrock of America’s national defense—meaning that they must occasionally be tested ...

Iran has likely carried out an undeclared missile test at its Imam Khomeini Spaceport, according to satellite photos analyzed ...

VIENNA – The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) continues meaningful engagement with nine states that ...

Valar Atomics and Utah San Rafael Energy Lab have begun construction of a high-temperature gas-cooled test reactor under ...

July 16 marked the 66th anniversary of the first nuclear weapons test explosion. The United States’ test, code-named “Trinity,” was exploded in the desert of New Mexico and ignited the nuclear age.

Portions of this article were originally published on Feb. 9, 2022. It has been updated with additional information. IDAHO ...

BBC Breakfast talks to nuclear test veterans who are campaigning for recognition from the British government, after suffering ...