Space-based nuclear weapons may seem like the stuff of science fiction, but real life sometimes yields new stories, especially when it comes to Russia. US officials say Moscow is developing a nuclear ...

GYEONGJU, South Korea — President Donald Trump on Thursday morning said he directed the Pentagon to begin testing nuclear weapons “on an equal basis” with Russia and China, an apparent attempt to flex ...

Thousands of nuclear tests have been conducted around the world but, for the past three decades, most countries have stopped.

Significant activity on Russia's Novaya Zemlya archipelago indicates an impending test of the nuclear-powered Burevestnik cruise missile, known as Skyfall by NATO. The Burevestnik, a complex system ...

Was President Trump’s recent directive to resume U.S. nuclear testing — after a hiatus of 33 years — an actual policy decision? Or was it a political stunt to project toughness? His surprise ...