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

Moscow reiterates willingness to adhere to expired nuclear weapons treaty, "as long as the United States does not exceed the ...

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

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

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 ...

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” ...

Scientists at Los Alamos National Laboratory say neutrinos could be used as a diagnostic ...

By Olivia Le Poidevin and Mark Trevelyan GENEVA, Feb 6 (Reuters) - The United States accused Beijing on Friday of conducting ...

The new U.S. accusations about China's nuclear weapons development come at a very turbulent moment for nuclear arms control globally.

DUBAI, United Arab Emirates(AP) — President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to ...

Warning at an appearance in Las Vegas that the world is “less safe” without a binding nuclear pact, two key House Democrats ...