A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground nuclear test nearly six years ago.

The United States has revealed new details about a Chinese underground nuclear test that it claims happened nearly six years ...

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

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. The undersecretary of state for arms control and ...

China’s successful test of an anti-satellite weapon in 2007, followed by the U.S. destruction earlier this year of an out-of-control U.S. satellite, demonstrated that space may soon no longer remain a ...

European startup Hypersonica says it has successfully conducted its first hypersonic missile flight test as the company breaks cover. The test at Andoya Space in Norway involved the missile topping ...

A BOMBSHELL ACCUSATION: When President Donald Trump announced last October that he was ordering the Pentagon to “immediately” start testing nuclear weapons on an equal basis,” with “other countries” ...

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 ...

(CNN) — 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 ...

Add Yahoo as a preferred source to see more of our stories on Google. China is testing nuclear warheads: US The U.S. government has accused China of secretly conducting at least one “yield-producing ...

GENEVA — The United States accused Beijing on Friday of conducting a secret nuclear test in 2020 as it called for a new, broader arms control treaty that would bring in China as well as Russia. The ...