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

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

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

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

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

Add Yahoo as a preferred source to see more of our stories on Google. Some believe Donald Trump has been engaging in nuclear sabre-rattling intended to intimidate China - Alex Brandon/AP The United ...

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

Turkish FM Hakan Fidan also said that the idea that US or Israeli airstrikes on Iran could lead to regime change was "a pipe ...

C ould nuclear bombs be harnessed to help people? As the Cold War raged on in the 1950s, scientists building nuclear weapons began to ponder whether they could be put toward posit ...

The quiet collapse of nuclear stability,” Russia has built a nuclear arsenal containing, among other things, 1,500 tactical nuclear weapons. Tactical nuclear weapons are generally smaller than ...