The United States has accused China of secretly conducting nuclear tests, claiming that Beijing is violating international norms by obscuring its explosive activities and preparing for further weapons development. As the New START arms control agreement with Russia approaches its end, U.S. officials are pushing for a new nuclear arms treaty that includes China. The Trump administration has emphasized the need for broader agreements to address this escalating arms race, with the Kremlin also acknowledging the urgency for quick negotiations to address these nuclear tensions.