The trial included first-of-its-kind thermal preconditioning of the bomb before carriage on an F-35 fighter jet.

The United States has completed crucial flight tests of its B61-12 nuclear bomb. These tests involved the advanced F-35A ...

The US successfully completed stockpile flight tests of the B61-12 nuclear bomb using the F-35A fighter jet, confirming ...

The U.S. has announced a successful series of flight tests, dropping unarmed B61-12 nuclear gravity bombs from an F-35A stealth fighter at Nevada’s Tonopah Test Range. Conducted in August by Sandia ...

President Donald Trump has suggested the U.S. will restart nuclear weapons testing, a move that upends decades of American policy.

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.

As many as 550,000 U.S. military service members were exposed to radiation or participated in nuclear weapons tests that ...

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

President Trump explained the order by saying other, unnamed nations were testing their own nuclear weapons, even though no country has tested since 2017.

RUSSIA has suggested it will prepare to start full-scale nuclear bomb testing in the Arctic region. It comes as the US ...

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