Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

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

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

WASHINGTON — The United States is ready to carry out low-yield nuclear tests to match alleged secret explosions by China and Russia, ending a decades-old moratorium, a senior official said Tuesday.

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

New START, the last treaty between the United States and Russia that limited deployment of nuclear warheads, expired this ...

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

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 ...

Yet January 14th marked the longest period humankind has gone without one or another part of the whole exploding one of these deadly weapons, stretching back to the last North Korean test in September ...

The Rulison test — conducted at a depth of 8,425 feet — was the deepest subterranean nuclear-bomb detonation conducted in U.S. history.