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

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

Energy Secretary Christopher Wright clarifies U.S. nuclear testing plans, confirming no explosive detonations but systems ...

Russian officials say they are waiting for an explanation from President Donald Trump about nuclear testing. He hasn't given ...

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

President Trump has argued the U.S. should test nuclear weapons because other countries are doing it. But scientific data suggest they’re not.

A Pakistani official told CBS News that the country "will not be the first to resume nuclear tests" in response to President ...

Top energy and nuclear officials in the Trump administration are planning to meet with the White House and National Security Council in the coming days to dissuade President Donald Trump from resuming ...

After the president called for resuming nuclear testing “immediately,” the official said the administration is planning only ...

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