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

Last year, President Donald Trump shocked many people when he instructed the government to resume nuclear testing “on an ...

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

Iran experienced a 4.3-magnitude quake today (March 3), according to the US Geological Survey (USGS). However, given the ...

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 ...

After a 4.3 magnitude earthquake hit Khonj, speculation of a secret Iranian nuclear test erupted. We break down the seismic signatures, enrichment levels, and expert analysis to determine if Tehran ha ...

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.

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

Does a video show a nuclear test carried out by the Islamic Revolutionary Guard Corps (IRGC) in Iran? No, that's not true: The video clip shows a nuclear test in the Nevada desert in 1957. The ...

A DF-17 road-mobile medium-range ballistic missile is seen during a military parade in Beijing's Tiananmen Square on September 3, 2025. China may want to develop new nuclear warheads for its ...