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

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 ...

Resuming full testing of nuclear weapons — as President Donald Trump called for last week — would be unnecessary, costly, undermine nonproliferation efforts, and empower the nation’s adversaries to ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

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

Satellite images show major construction at secret nuclear weapons facilities in southwest China. The images reveal new buildings, underground bunkers, and industrial infrastructure linked to ...

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

Prior to his meeting with China’s President Xi Jinping in Busan, South Korea on October 30, United States President Donald Trump wrote that he has ordered the U.S. military to resume nuclear testing ...

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 ...

Jay Cowan still worries about the Rulison blast’s proximity to the Colorado River and expresses disbelief at the 107 days that radioactive gas was burned in order to test whether the radionuclides ...

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