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

nuclear weapons

Making sense of North Korea’s recent ICBM and (possible) nuclear tests

By Seiyeon Ji, Victor Cha | Analysis, Nuclear Weapons

Rebuttal: Current nuclear weapons policy not safe or sane

By Stewart Prager, Alan Kaptanoglu | Analysis, Nuclear Risk, Nuclear Weapons

Nuclear Notebook: How many nuclear weapons does the United States have in 2022?

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

Russian President Vladimir Putin spoke at the military parade marking the end of World War II. May 9, 2022. Red Square, Moscow. Credit: Website of the President of Russia. CC BY 4.0.

On Victory Day, Putin points fingers but doesn’t escalate war

By Susan D’Agostino | Nuclear Risk, Nuclear Weapons

Ukrainian refugees from 2022, crossing into Poland. Credit: Міністерство внутрішніх справ України. Accessed via Wikimedia Commons. CC BY 4.0.

How to host a refugee, spot fake war images, say “welcome” in Ukrainian, and more

By Susan D’Agostino | Nuclear Risk, Nuclear Weapons

Illia Ponomarenko, former defense reporter for the Kyiv Independent.

Illia Ponomarenko: Ukraine’s most-followed war journalist is a “dude” from Donbas

By Susan D’Agostino | Nuclear Risk, Nuclear Weapons

An artist's rendition of Russian President Vladimir Putin's nuclear posture. Photo credit: kremlin.ru, changes made, CC BY 3.0.

Will Putin go nuclear? A timeline of expert comments

By Susan D’Agostino | Nuclear Risk, Nuclear Weapons

People walking in Bucharest, Romania. Credit: Jake Stimpson. Accessed via Wikimedia Commons. CC BY 2.0.

Poll: Russia’s nuclear saber-rattling is rattling neighbors’ nerves

By Lauren Sukin, Alexander Lanoszka | Nuclear Risk, Nuclear Weapons

Working trip of the President of Ukraine to the Kyiv region. Creid: Official Website of the president of Ukraine. Accessed via Wikimedia Commons. CC BY 4.0.

Russia committed war crimes. But are they genocide?

By Susan D’Agostino | Analysis, Nuclear Risk, Nuclear Weapons

P5 Press Conference at the United Nations. April 2013. Credit: U.S. Mission Geneva / Eric Bridiers. Accessed via Flickr. https://www.flickr.com/photos/us-mission/8663813428 CC BY-ND 2.0.

Nuclear arms control: Still necessary, but more difficult than ever

By Stephen J. Cimbala, Lawrence J. Korb | Analysis, Opinion

The science says that children experience better mental health outcomes when their caregivers talk with them about difficult subjects, including war and nuclear threats. Credit: Ben Wicks. Unsplash license. https://unsplash.com/photos/iDCtsz-INHI

How to talk to your kids about the war in Ukraine

By Susan D’Agostino | Analysis, Nuclear Risk, Nuclear Weapons

Why—and how—the world should condemn Putin for waving the nuclear saber

By Pavel Podvig | Nuclear Risk, Nuclear Weapons