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

This area, known as Lop Nur, or Lop Lake, is often likened by defence experts to Area 51, the fabled compound where the US tests its most classified and cutting-edge aircraft. Isolated and tightly ...

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

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

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

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.

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

A U.S. official presented new allegations regarding a Chinese nuclear test from 2020 and urged global powers to enhance ...

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

Warning at an appearance in Las Vegas that the world is “less safe” without a binding nuclear pact, two key House Democrats ...

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