At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

The Swiss Foreign Ministry says Iran and the United States will hold a second round of talks over Tehran’s nuclear program ...

The U.S. government revealed new intelligence on Tuesday suggesting China may have conducted an ...

China is on course to have more than 1,000 nuclear warheads in the next few years, according to U.S. intelligence estimates.

Kim Jong Un describes the 600-mm multiple launch rocket system as a deterrent against enemies that no force can stop.

North Korean leader Kim Jong Un oversaw the formal unveiling of a huge multiple rocket launcher that can fire nuclear warheads, state media said.

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

"Talks do not necessarily need an end point — in the shape of a deal — for them to have purpose," argues an international ...

The expiration of the New START treaty last week -- long the framework limiting both nations to 1,550 warheads in 700 launchers -- has renewed fears of an emerging nuclear arms race.

Satellite imagery of secretive nuclear facilities reveals Beijing’s efforts to expand its arsenal, just as the last global ...

A fter World War II, peace-loving Sweden began working on a nuclear bomb to stave off a feared Soviet invasion. But in the ...

Satellite images show that Iran has been reinforcing key military and nuclear facilities, including sites struck by the US and Israel last year, as possible war looms between Tehran and Washington.