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

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

"The jury remains out on whether the June 2020 event was a nuclear test or not. What is certain is that we are in a time of ...

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

US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly ...

Senior Russian officials on Nov. 11 said they were still waiting for a White House explanation about what President Donald Trump meant he when said he had instructed the Pentagon to resume nuclear ...

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 ...

WASHINGTON — Democratic senators representing states that bore the brunt of the fallout from explosive nuclear weapons testing are seeking to pass legislation that would bar President Donald Trump ...

In the midst of trading promises with both allies and adversaries during his recent tour of Asia, U.S. President Donald Trump dampened the positive mood with an ominous pronouncement. “Because of ...

Secretary of War Pete Hegseth’s recent announcement that the U.S. will resume testing nuclear weapons has alarmed some nuclear-arms experts. It shouldn’t. President Trump had already announced earlier ...