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 ...

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

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.

A small nuclear test reactor arrived in Utah aboard U.S. military aircraft. It won’t power homes, but state and federal ...

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

The United States Air Force maintains a small, tightly controlled fleet of aircraft certified to deliver nuclear weapons, and ...

A U.S. official suggested in recent comments that Beijing conducted a test back in the summer of 2020. So why is the Trump ...

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

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 ...

Reports suggest China is expanding its nuclear arsenal in secret. The lack of transparency makes it difficult to assess the ...

Iran’s top diplomat met with the head of the U.N. nuclear watchdog agency on Monday, ahead of a second round of ...