A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

Last year, President Donald Trump shocked many people when he instructed the government to resume nuclear testing “on an ...

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

CHINA has been accused of a massive nuclear expansion as well as carrying out secret tests, as the United States bids to force Beijing to join a future arms control treaty. Washington has claimed ...

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

Resuming full testing of nuclear weapons — as President Donald Trump called for last week — would be unnecessary, costly, undermine nonproliferation efforts, and empower the nation’s adversaries to ...

Nevada experiences over 100 minor earthquakes near Tonopah Test Range, sparking speculation of nuclear testing amidst US-Iran tensions.

Prior to his meeting with China’s President Xi Jinping in Busan, South Korea on October 30, United States President Donald Trump wrote that he has ordered the U.S. military to resume nuclear testing ...

WEST PALM BEACH, Fla. (AP) — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was ...

A magnitude 4.1 earthquake in southern Iran has reignited online speculation that Tehran may be conducting underground nuclear weapons tests, with some commentators drawing a direct line between the ...

Senate Democrats want to curb President Donald Trump’s ability to unilaterally resume nuclear testing, as the president suggested the U.S. would do on an "equal basis" with Russia and China moving ...