US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly ...

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.

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 United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for a broader nuclear weapons agreement including both China and Russia.

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

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

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 US accused China of secret nuclear tests, banned under international agreement, that were building toward tests of larger nuclear warheads.

Beijing has been accused of conducting secret nuclear explosion tests and attempting to disguise its violation of a global prohibition treaty.