The United States has accused China of conducting a covert nuclear explosive test in 2020, a charge that lands at a moment when the last major arms control agreements are fraying. The allegation, ...

An international monitor said it has seen no evidence to support the claim by a senior United States official who accused China of carrying out a series of clandestine nuclear tests in 2020 and ...

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 ...

In the wake of U.S. President Donald Trump’s suggestion earlier this year that the U.S. would resume nuclear testing, a U.S. government representative defended the stance at a global nuclear arms ...