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

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

In October 1964, the People’s Republic of China detonated its first atomic bomb under the code name Project 596 at the Lop Nur test site. Developed after the collapse of Soviet assistance, the program ...

Add Yahoo as a preferred source to see more of our stories on Google. When the U.S. military detonated the world's first nuclear weapon near New Mexico’s Jornada del Muerto desert in 1945, people ...

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

(Corrections & Clarifications: This story previously misstated how far nuclear fallout from the government's atomic tests reached. Fallout from the initial Trinity Test reached 46 of the 48 contiguous ...

The United States has released new details it says support its allegation that China may have carried out a secret nuclear explosive test nearly six years ago, escalating a dispute that sits at the ...

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 ...