Energy Secretary Chris Wright says that new tests of the U.S. nuclear weapons system ordered up by President Donald Trump ...

The U.S. hasn’t tested the explosion of a nuclear weapon since 1992, when President George H.W. Bush ordered a moratorium.

The Energy Department and Air Force in August successfully carried out the first tests dropping unarmed B61-12 nuclear ...

We asked Professor Paul Bracken, an expert in nuclear strategy, what’s behind the posturing and what test explosions would mean for the world.

Experts agreed if the U.S. resumed full nuclear weapons tests, other nations would do the same — giving them a chance to ...

Trump ordered the U.S. military to resume nuclear weapons testing. Why were they stopped and why restart now? What to know.

Energy Secretary Chris Wright says President Donald Trump's call for immediate resumption of nuclear weapons tests will not include explosions.

Energy Secretary says administration will tests nuclear weapons ‘systems’ without detonating devices — for now ...

A single nuclear bomb dropped on a city can kill millions. If many such bombs were used, they could change the world's ...

Energy Secretary Chris Wright said the testing ordered up in a surprise announcement by President Trump last week would focus ...