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 ...

President Donald Trump’s call for the United States to resume a nuclear testing program that was shuttered during the George HW Bush administration would require spending astronomical amounts of money ...

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

Add Yahoo as a preferred source to see more of our stories on Google. VIENNA (Reuters) -The head of the Comprehensive Nuclear-Test-Ban Treaty Organization, or CTBTO, said on ‌Thursday that any ...

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

Minutes before walking into a high-stakes meeting with Chinese President Xi Jinping this past week, President Donald Trump announced what could prove to be a stunning shift in American nuclear policy.

US President Donald Trump has revealed on social media that he has instructed the Pentagon (now known as the Department of War) to resume nuclear weapons testing in the United States for the first ...

Confusion and ambiguity are dangerous in nuclear brinksmanship. President Donald Trump spread both on Wednesday when he ...

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

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