A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June ...

Last week, NPR and other news outlets aired a story about a possible nuclear test conducted in China. Assistant Secretary of State Christopher Yeaw alleged that China had conducted a clandestine ...

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 ...

President Donald Trump has called for the United States to test its nuclear weapons for the first time in three decades. But Trump’s statements about testing — in particular, whether other nations are ...