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

nuclear weapons

soldier with gas mask

Putin’s psychology and nuclear weapons: the fundamentalist mindset

By Charles B. Strozier, David M. Terman | Special Topics

night-time test launch of Minuteman ICBM with silhouettes of crowd

Nuclear Notebook: The long view—Strategic arms control after the New START Treaty

By Jessica Rogers, Matt Korda, Hans M. Kristensen | Nuclear Notebook, Nuclear Risk, Nuclear Weapons

Putin at 20-foot long table with Macron

Distressing a system in distress: Global nuclear order and Russia’s war against Ukraine

By Mariana Budjeryn | Nuclear Weapons

Nowhere to hide: How a nuclear war would kill you—and almost everyone else. (RU)

By François Diaz-Maurin, Thomas Gaulkin | Multimedia, Nuclear Risk, Nuclear Weapons

chalkboard drawing cartoon bomb

Russia says Ukraine is preparing a “dirty bomb.” Is it true, and what does it mean?

By François Diaz-Maurin, Dan Drollette Jr | Nuclear Risk, Nuclear Weapons

A launch of the Russian Iskander-M, which can carry a tactical nuclear warhead, at the Kapustin Yar proving ground in March 2018. Photo credit: the websites (mil.ru, минобороны.рф) of the Ministry of Defence of the Russian Federation. Licensed under the Creative Commons Attribution 4.0.

Rhetoric in Ukraine has reinforced the fallacy of limited nuclear exchange

By John Gower, Andrew Weber | Nuclear Risk, Nuclear Weapons

Nowhere to hide: How a nuclear war would kill you—and almost everyone else.

By François Diaz-Maurin, Thomas Gaulkin | Investigative Reporting, Multimedia, Nuclear Risk, Nuclear Weapons

Soviet nuclear launch site in Cuba

“Midnight is upon us”—the Cuban Missile Crisis as seen at the time, in one person’s words

By Harrison Brown | Nuclear Risk, Nuclear Weapons

4A_Fat Man_Bomb_Diagram.jpg

The precedent the world—and Russia—has rejected

By Nina Tannenwald, David Holloway | Opinion

JFK in White House in Cuban Missile Crisis

60 years later: How many nuclear weapons did the US and USSR have in the Cuban Missile Crisis?

By Hans M. Kristensen, Robert S. Norris | Analysis

Pushing back against Putin’s threat of nuclear use in Ukraine

By Steven Pifer | Nuclear Risk, Nuclear Weapons

“Not a bluff:” Losing ground in Ukraine, Putin raises nuclear threats

By François Diaz-Maurin | Nuclear Risk, Nuclear Weapons