The United States has accused China of conducting a secret nuclear weapons test in 2020, raising global alarm just as a major US-Russia nuclear arms treaty expires. The claim was revealed at a global ...

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

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

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for a broader nuclear weapons agreement including both China and Russia.

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.

Officials have ruled out earthquakes or mining as the source of a 2.75-magnitude event in 2020 near China's nuclear test site.

The United States’ top nuclear arms official on Friday accused China of carrying out an undisclosed nuclear detonation in 2020, arguing that recent secretive underground tests by China and Russia have ...

In a world first, the US Department of Defense (aka the Department of War) airlifted a complete 5-MW nuclear reactor using a ...

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

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. State Department accused the Chinese government on Friday of conducting a secret nuclear test in 2020, while the Trump administration is seeking to include Beijing in new nuclear arms control ...