A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one ...

State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and ...

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

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

The U.S. government revealed new intelligence on Tuesday suggesting China may have conducted an ...

US claims China carried out a 2020 underground nuclear test at Lop Nur, urging Beijing and Moscow to engage in disarmament after New START expired.

U.S. releases seismic data alleging a secret 2020 Chinese nuclear test at Lop Nur as global arms control agreements continue ...

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

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 ...

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 ...

A Trump administration official said that a remote seismic station in Kazakhstan measured an “explosion” in western China on ...