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

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

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

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

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

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

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

If nothing replaces the New START nuclear arms treaty, security analysts see a more dangerous environment with a higher risk ...

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for ...

It remains to be seen whether the three big nuclear powers are headed into a new arms race, or whether President Trump is trying to spur negotiations on a new accord now that a last Cold War treaty ...

China almost certainly shook neighbouring Kazakhstan with an underground nuclear weapons test, according to a senior American ...

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