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

Ukraine

Accusations (and evidence) of Russian war crimes in Ukraine

By Norman M. Naimark | Nuclear Risk, Nuclear Weapons

(Rusted) Missile silo of a SS-24 missile, Strategic Missile Forces Museum in Ukraine. Credit: Michael. CC BY 3.0. Accessed via Wikipedia.

Ukraine building a nuclear bomb? Dangerous nonsense.

By Mariana Budjeryn, Matthew Bunn | Nuclear Risk, Nuclear Weapons

The Russian Tupolev Tu-22M3M can deliver nuclear weapons by missiles or by gravity bombs. Image originally posted to Flickr by Dmitry Terekhov at: https://flickr.com/photos/44400809@N07/19230388334. Licensed under cc-by-sa-2.0.

Russian military doctrine calls a limited nuclear strike “de-escalation.” Here’s why.

By Nikolai N. Sokov | Nuclear Risk, Nuclear Weapons

Credit: General Staff of the Armed Forces of Ukraine official Facebook page

Even if Putin prevails in Ukraine, he’s already lost the world

By Stephen J. Cimbala, Lawrence J. Korb | Nuclear Risk, Nuclear Weapons

Rodney C. Ewing

Nuclear reactors in a war zone: A new type of weapon?

By Rodney C. Ewing | Analysis, Nuclear Energy, Nuclear Weapons

Robert Socolow

Global collapse is in view

By Robert Socolow | Analysis, Climate Change, Nuclear Risk

The A1 Verse: A quiet between bombardments

By Thomas Gaulkin | Special Topics

Bulletin Science and Security Board condemns Russian invasion of Ukraine; Doomsday Clock stays at 100 seconds to midnight

By Science and Security Board | Announcement, Doomsday Clock, Nuclear Risk

How international law applies to attacks on nuclear and associated facilities in Ukraine

By George M. Moore | Nuclear Energy, Nuclear Risk

A damaged administrative building of the Zaporizhzhia nuclear power plant in Enerhodar, Ukraine, in a handout picture released on Friday. Credit: Energoatom/Via New York Times

What experts say an attack on a Ukrainian nuclear power plant could do

By Matt Field, Susan D’Agostino | Nuclear Risk

A close call at Ukraine reactor: On luck and nuclear disasters

By Maxime Polleri | Nuclear Risk, Opinion, Personal Essay

Representatives to the Biological Weapons Convention meet.

Don’t let finger-pointing doom this key treaty against bioweapons

By Filippa Lentzos, Jez Littlewood | Biosecurity