A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

A Trump administration official said that a remote seismic station in Kazakhstan measured an “explosion” in western China on ...

A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June 2020.

The United States has revealed new details about a Chinese underground nuclear test that it claims happened nearly six years ...

A U.S. official revealed details of an alleged Chinese nuclear test, urging global cooperation for disarmament while ...

A US official has presented evidence of a secret Chinese nuclear test, raising tensions in global arms control discussions.

Assistant U.S. Secretary of State Christopher Yeo said at an event at the Hudson Institute think tank that a remote seismic station in Kazakhstan detected a 2.75-magnitude "explosion". It occurred on ...

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

As New START Treaty expires, the US has revived claims of a secret 2020 China nuclear test at Lop Nor. Are we entering a new ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.