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 press China and ...

WASHINGTON, March 24 (Reuters) - A senior State Department official on Tuesday said the U.S. still is assessing how to implement President Donald Trump's order to ‌resume U.S. nuclear weapons tests, ...

The U.S. government has released fresh intelligence on what it claims was an illicit Chinese nuclear test conducted in 2020. On June 22 of that year, a remote seismic station in Kazakhstan detected a ...

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 ...

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. China denied the allegations, but experts are worried that ...

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