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

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

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

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

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

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

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

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

A senior US arms control official presented what he described as declassified evidence of a suspected underground nuclear ...

Seismic data points to a detonation in northwest China, U.S. says.

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

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