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 ...

The U.S. deliberates on resuming nuclear weapons tests under Trump's directive, potentially destabilizing global non-proliferation. Critics warn of repercussions, as Russia and China might follow suit ...

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 ...

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 ...

Nukemap lets you simulate nuclear explosions on an interactive map. A science historian created the tool years ago but recently updated it. The new version uses real-time weather conditions to ...

Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so ...

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 ...

For the first time in more than half a century, there are no binding restraints on the buildup of the largest nuclear forces on Earth. The New START treaty expired on Feb. 5, 2026, ending the last ...

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 ...