The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing ...

It remains to be seen whether the three big nuclear powers are headed into a new arms race, or whether President Trump is ...

Warning at an appearance in Las Vegas that the world is “less safe” without a binding nuclear pact, two key House Democrats ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

A U.S. official suggested in recent comments that Beijing conducted a test back in the summer of 2020. So why is the Trump ...

Out of this surreal convergence of spectacle and science emerged one of the most striking and unsettling cultural icons of ...

Satellite images from southwest China’s Sichuan Province reveal rapid expansion of the country’s nuclear weapons infrastructure, reflecting Beijing’s efforts to strengthen its strategic position amid ...

The Rulison test — conducted at a depth of 8,425 feet — was the deepest subterranean nuclear-bomb detonation conducted in U.S. history.

A nuclear test in China has raised questions about military strategy and international relations. We explore the details, the ...

New construction at long-secret sites in Sichuan points to a faster buildup of China’s nuclear arsenal, even as global arms control frameworks weaken.

Canada’s former top soldier says we need to consider developing nuclear weapons in the name of strategic independence. But that will have massive costs ...

China has rejected US claims of secret nuclear tests, calling them “outright lies,” accusing Washington of using allegations ...