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.

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

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.

On October 29, just before meeting with China’s President XI Jinping, President Trump posted on the right-wing social media network Truth Social that “because of other countries [sic] testing programs ...

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

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 ...

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 ...