U.S. President Donald Trump warned Iran on Thursday that it must reach a deal over its nuclear program or "bad things" will ...

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

WASHINGTON – A 15-year-old treaty that has limited how many nuclear weapons the United States and Russia can maintain comes to an end this week, as experts warn that no new agreement could portend a ...

In 1958, as Cold War tensions shaped decisions in Washington and Moscow, a study quietly examined whether a nuclear device ...

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.

The United States openly tracks thousands of nuclear warheads, yet a small number have slipped permanently out of reach. Yes, the US has lost 6 nuclear weapons, and each disappearance left a trail of ...

More than 514,000 people would be killed if the Russians were to drop the largest nuclear bomb ever designed by the USSR on Swindon.

A Lockheed Martin F-35A stealth fighter from the US Air Force (USAF) test dropped multiple inert versions of a nuclear bomb in August. The USA’s Sandia National Laboratories, a Honeywell subsidiary ...

A quarter century ago, German political scientist Harald Müller observed that “the very basic question of whether … Germany should rethink its renunciation of nuclear weapons has a very odd ...