Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for ...

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

Nov. 6 (UPI) --President Donald Trump's calls to ramp up nuclear weapons testing last week have put nuclear watchdogs and world leaders on alert while experts say the United States has little to gain.

The US accused China of secret nuclear tests, banned under international agreement, that were building toward tests of larger ...

Add Yahoo as a preferred source to see more of our stories on Google. Donald Trump’s command for the United States to resume nuclear weapons testing will not include explosive tests, for now, ...

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 ...

President Trump's comments about restarting weapons tests are not likely to lead to mushroom-cloud explosions over the New Mexico desert or seismic shaking underground in Nevada, according to the ...

Warning at an appearance in Las Vegas that the world is “less safe” without a binding nuclear pact, two key House Democrats ...