WASHINGTON, March 24 (Reuters) - A senior State Department official on Tuesday said that the U.S. still is assessing how to implement President Donald Trump's order to resume U.S. nuclear weapons ...

By Jonathan Landay and Simon Lewis WASHINGTON, March 24 (Reuters) - A senior State Department official on Tuesday said the U.S. still is assessing how to implement President Donald Trump's order to ...

Add Yahoo as a preferred source to see more of our stories on Google. The US said it has intelligence that China conducted banned nuclear explosive tests. The nuclear monitoring organization said it ...

As a nuclear expert, this is what I find most worrying about Iran’s weapon capabilities - THE LONGER READ: As the war in Iran fuels speculation over how close it is to developing weapons of mass ...

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 ...

After missile hit city near sensitive site, experts say strike on nuclear reactor would pose little risk of Chernobyl-like ...

Donald Trump has dramatically shifted his justification for the escalating Iran war, warning the Middle Eastern power was ...

The U.S. agency in charge of nuclear weapons achieved a record production of tritium, a radioactive gas that increases the explosive power of nuclear warheads, after the Tennessee Valley Authority got ...

On February 6, the United States Undersecretary for Arms Control and International Security Thomas DiNanno accused China of conducting nuclear weapons tests that achieved supercritical yields, ...

Anyone looking in the direction of the nuclear blast for up to 10 miles would experience temporary blindness that could last minutes, or even long-term blindness, and that's just the first millisecond ...