There has been talk for decades about a true successor to the specialized deep bunker-busting B61-11 nuclear bomb.

The head of the organization overseeing a treaty banning nuclear testing warned Wednesday that if the United States, Russia ...

Semipalatinsk, Kazakhstan was once the Soviet Union’s primary testing ground for nuclear weapons. Today, in an age of rising ...

The waters on nuclear testing are murky, with international observers casting doubt on whether the 2020 test even happened — all while China is ambiguous and Australia remains in the dark.

A top Trump administration official on Tuesday disclosed new details to support its claim that China conducted an underground nuclear explosion during Donald Trump’s first presidency, a contested ...

Pyongyang making ‘very serious’ progress on producing weapons, with rapid rise in activity at main nuclear complex ...

The nation’s ascent from a rogue state to a full-fledged atomic power means it may soon have a globally relevant deterrent.

At a moment of mounting nuclear danger and deepening global mistrust, governments from nearly every country will convene at ...

The State Department’s allegation that China conducted a yield-producing nuclear test in 2020 is reigniting debate in Washington over whether the United States can continue its decades-long moratorium ...

The United States is ready to carry out low-yield nuclear tests to match alleged secret explosions by China and Russia, ending a decades-old moratorium, a senior official said Tuesday. New START, the ...

Maralinga was developed in South Australia, about 650 miles north west of Adelaide, as a permanent nuclear proving test ...