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🚨 Just in: United Kingdom nuclear weapons, 2024 By Hans Kristensen (also on Bluesky) Matt Korda Eliana Johns and Mackenzie Knight-Boyle (mknight.bsky.social) of Federation of American Scientists🔬 In Bulletin of the Atomic Scientists thebulletin.org/premium/2024-1… #SLBM #UnitedKingdom #ballisticmissiles #nuclearweapons #submarines

💫 NEW! GIJN is proud to announce that it is the new administrator for the annual SIGMA data journalism awards (sigmaawards), which are now accepting submissions for the 2025 round. Learn more: twp.ai/1PyPK2

The White House web site with all the Biden PCAST products has been wiped clean. But, thanks to Eric Horvitz, you can still find all our reports at erichorvitz.com/PCAST_reports_….

I'm reading Karaganov/Trenin book. It's quite something. I'll try to write more, but right now enjoy this gem of recommendation: "Sending the last warning signal by carrying out a ground test of an ultra-high-yield nuclear warhead (of over 50 megatons)"

Avec Mereana Reid Arbelot ma collègue #députée de #Polynésie, nous sommes fiers de redémarrer aujourd’hui la commission d’enquête parlementaire sur les conséquences des #essaisnucléaires interrompue en 2024 par la dissolution. Assemblée nationale Sébastien Lecornu Emmanuel Macron Ministère des Outre-mer

Christopher Fichtlscherer, Moritz Kütt, "Uniqueness, Reproducibility and Discrimination of Nuclear Warhead Gamma Signatures," Science & Global Security 32, no. 1-3 (2024) scienceandglobalsecurity.org/archive/2024/0…

We reproduced DeepSeek R1-Zero in the CountDown game, and it just works Through RL, the 3B base LM develops self-verification and search abilities all on its own You can experience the Ahah moment yourself for < $30 Code: github.com/Jiayi-Pan/Tiny… Here's what we learned 🧵

ATTENTION NUKE NERDS: We’re hosting a one-week, in-person OSINT bootcamp to teach a new generation of open-source nuke investigators. If you’re an early- to mid-career nuclear weapons analyst, this bootcamp is calling for you. Apply at the link in the reply.

We RL'ed humanoid robots to Cristiano Ronaldo, LeBron James, and Kobe Byrant! These are neural nets running on real hardware at our GEAR lab. Most robot demos you see online speed videos up. We actually *slow them down* so you can enjoy the fluid motions. I'm excited to announce

1/x Navigational Warnings have appeared for a likely #Minuteman-III #ICBM unarmed #test launch from Vandenberg to Kwajalein on Feb 19-20. The pattern is unusual and suggest this is a MIRV-ed test with up to six dummy warheads. Jonathan McDowell Hans Kristensen (also on Bluesky) Scott LaFoy

Inside a chaotic 48 hours of firings and rehirings at the agency responsible for maintaining the the nation's stockpile of nuclear weapons. Managers were given 200 characters (not words) to justify why staff shouldn't be fired. npr.org/2025/02/14/nx-…

🚨 Just in: SCOTUS goes nuclear: Justices' decision could seal spent fuel storage options for decades By University of Michigan's Riley Fisher, Muhammad Abdussami, and Aditi Verma In Bulletin of the Atomic Scientists thebulletin.org/2025/02/scotus… #nuclearwaste #SCOTUS #SupremeCourt

🙏for Pope Francis

🚨What is the future of China's approach to strategic deterrence? Join Carnegie Nuclear Policy's Fiona Cunningham to discuss this (+ her new book) with Pranay Vaddi, Mallory Stewart, and Tong ZHAO at our upcoming hybrid event. 📅Mar. 11, 2-3:30pm EST, in-person and online. Register

Today, at the United Nations, I listened. Tomorrow I will be speaking from the podium. Read NUCLEAR WAR: A SCENARIO. Join the conversation, while we can all still have one.

If you were the Kremlin, why would you make any concessions right now? You have every incentive to demand it all: land, sanctions relief, demilitarisation, neutralisation & no troops in Ukraine. If it collapses, Trump likely to blame Ukraine anyway, allowing continuation of war.

Professor Zia Mian, co-chair of the #TPNW Scientific Advisory Committee and member of the Physicists Coalition for Nuclear Threat Reduction steering committee, addresses the #3MSP on the overwhelming evidence of the catastrophic risks of nuclear weapons + nationalism.

Nuclear war is insane. Nuclear threats are insane. Every person I interviewed for NUCLEAR WAR: A SCENARIO knows this. Read the book. Join the conversation, while we can all still have one. 🙏United Nations, #TPNW, 3rd Meeting of the States Parties (3MSP).

Pour discréditer #Toxique, notre enquête sur les essais nucléaires en PF avec Sébastien Philippe, le CEA n'a pas lésiné sur les moyens Sur Disclose Le Monde The Guardian, nous révélons les coulisses d'un opé d'influence. Son coût ? Près de 90 000 € lemonde.fr/politique/arti…

"Accidents happen all the time. Nuclear weapons are not immune from this dangerous reality." From Hans Kristensen (also on Bluesky), Matt Korda, Eliana Johns, and Allie Maloney in Washington Post Opinions "How Nuclear War Could Start" 🔗 below