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

State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and ...

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

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 ...

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

Officials have ruled out earthquakes or mining as the source of a 2.75-magnitude event in 2020 near China's nuclear test site.

U.S. releases seismic data alleging a secret 2020 Chinese nuclear test at Lop Nur as global arms control agreements continue ...

Beijing dismisses Washington’s accusations that it conducted nuclear tests in 2020 as “groundless” and calls on the US to uphold global commitments under the Comprehensive Nuclear-Test-Ban Treaty.

The U.S. government revealed new intelligence on Tuesday suggesting China may have conducted an ...

Confusion and ambiguity are dangerous in nuclear brinksmanship. President Donald Trump spread both on Wednesday when he ...

Jay Cowan still worries about the Rulison blast’s proximity to the Colorado River and expresses disbelief at the 107 days that radioactive gas was burned in order to test whether the radionuclides ...

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