The authoritative guide to ensuring science and technology make life on Earth better, not worse.

Nuclear Weapons

Facing nuclear reality, 35 years after The Day After

By Dawn Stover | Investigative Reporting, Nuclear Risk, Nuclear Weapons

President Ronald Reagan and Soviet General Secretary Gorbachev signing the INF Treaty in the East Room of the White House on December 8, 1987.

What the impending death of the INF teaches about future arms control agreements

By Perry World House | Columnists, Nuclear Risk, Nuclear Weapons, The INF Treaty and the Future of Arms Control

George H.W. Bush and Mikhail Gorbachev sign the Strategic Arms Reduction Treaty (START) in 1991.

George H.W. Bush worked toward a soft nuclear landing for the dissolving Soviet Union

By Siegfried S. Hecker | Nuclear Risk, Nuclear Weapons

Saudi Crown Prince Mohammed bin Salman, in 2017

The Khashoggi murder raises questions about a Saudi Bomb

By John Mecklin | Nuclear Energy, Nuclear Risk, Nuclear Weapons, What We’re Reading

BTS, the “atomic bomb shirt,” and South Korean attitudes toward nuclear weapons

By Viet Phuong Nguyen | Analysis, Nuclear Weapons

A billet of highly enriched uranium that was recovered from scrap processed at the Y-12 National Security Complex Plant.

Why the security of nuclear materials should be focus of US-Russia nuclear relations

By Andrew W. Reddie, Bethany Goldblum | Analysis, Nuclear Energy, Nuclear Risk, Nuclear Weapons, The INF Treaty and the Future of Arms Control

Will disruptive technology cause nuclear war?

By Matthew Kroenig, Bharath Gopalaswamy | Analysis, Disruptive Technologies, Nuclear Risk, Nuclear Weapons

EU High Representative for Foreign Affairs Federica Mogherini and Iranian Foreign Minister Javad Zarif during JCPOA negotiations in Switzerland in 2015. (Photo credit: US Department of State.)

Despite sanctions, Iran unlikely to restart nuclear program—yet

By Kelsey Davenport | Analysis, Nuclear Weapons, The Iranian problem

Postage Stamp, Apsara Research Atomic Reactor in Trombay, Mumbai, circa 1965

Estimating India’s nuclear weapons-producing capacity

By Syed Sadam Hussain Shah, Syed Javaid Khurshid | Analysis, Nuclear Weapons

A Chinese DF-26 intermediate range missile and launcher.

We don’t have a missile gap in Asia. We have a diplomacy gap.

By Alexandra Bell | Analysis, Nuclear Risk, Nuclear Weapons, The INF Treaty and the Future of Arms Control

Arms control on the brink

By Kingston Reif | Analysis, Nuclear Risk, Nuclear Weapons, The INF Treaty and the Future of Arms Control

Interactive: The Doomsday Clock Timeline

By John Mecklin | Doomsday Clock, Multimedia, Nuclear Risk, Nuclear Weapons