As the cloud cleared, Air Force bombers dropped in to gather air samples. Researchers hoped that the radioactive fallout ...

The Soviet Union built the largest nuclear weapon ever detonated, but just before its test, engineers deliberately reduced ...

In 1961, the Soviet Union detonated the largest nuclear weapon ever built, a test so powerful it sent shockwaves around the ...

Russia attacked Ukraine overnight with 242 drones and 36 missiles, the Ukrainian Air Force said Friday morning.

The Russian Defense Ministry said on Friday that it had struck western Ukraine with a nuclear-capable intermediate-range ...

Flight tracking data spotted the US Air Force's 'nuclear sniffer' soaring through several states on Thursday, raising concern ...

Russia says it fired a nuclear-capable 8,000mph Oreshnik missile at Ukraine which is believed to have been aimed at a gas ...

Russia has said it struck Ukraine with a nuclear-capable missile in its latest barrage. The Russian defence ministry said the ...

It came on a night of death and destruction for Ukraine with massive attacks on civilians in their homes, especially in Kyiv ...

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

Opinion: This op-ed's authors argue that the president's nuclear testing comments were correct, considering America's aging ...

VIENNA (AP) — In the wake of U.S. President Donald Trump’s suggestion earlier this year that the U.S. would resume nuclear testing, a U.S. government representative defended the stance at a global ...