The US has accused China of conducting secret nuclear weapons tests and risking a new nuclear arms race. “Today, I can reveal that the US government is aware that China has conducted nuclear explosive ...

WASHINGTON, Feb 17 (Reuters) - A senior U.S. official on Tuesday revealed what he said were new details of an underground nuclear test blast that China allegedly conducted in June 2020. Assistant ...

GENEVA(AP) — A U.S. official focusing on arms control on Monday provided what he called new, declassified details of a Chinese underground nuclear test nearly six years ago and urged countries to ...

In the five days since the last remaining nuclear treaty between the United States and Russia expired, statements by administration officials have made two things clear: Washington is actively ...

FILE - Christopher Yeaw, center, arrives to a Senate Foreign Relations Committee confirmation hearing on his nomination to be an assistant Secretary of State, Nov. 19, 2025, on Capitol Hill in ...