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 covert explosive test in recent years as part of a broader push to ...

A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June 2020.

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

In a move that sent tremors through the global security landscape, the United States, in February 2026, publicly accused ...

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

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

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

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

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

CHINA has been accused of a massive nuclear expansion as well as carrying out secret tests, as the United States bids to ...

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 ...