Mark Cuban @mcuban.bsky.social Entrepreneur
Costplusdrugs.com
Jon B. Wolfsthal @jonatomic.bsky.social Nuclear Fellow @ Pax Sapiens, former Bulletin of Atomic Scientists and State Department International Sec Advisory Board, CNAS Sr. Fellow, former National Security Council. No #manels, Yankees/Gunners.
Blogs of War @blogsofwar.com 
Tyler Borchers @tylerborchers.com SVP, Strategy & Operations. Building products, growing audiences and driving revenue. Previously TIME and VICE News. Posting about media, technology and AI.
Website: https://tylerborchers.com/
LinkedIn: https://linkedin.com/in/tylerborchers/
Dave Brown @davebrown.bsky.social Deputy Managing Editor for Global Security at Politico
Thermonuclear Paper Pusher @nukeryan.bsky.social Big badda booms. Systems, process, and requirements.
Sara Beth Marchert @sbmarchert.bsky.social Nuke nerd. Not my employer, likes/RTs ≠endorsements
CBRN Risk Analysis and Proliferation @cbrn-risk-prolif.bsky.social Military background, researcher, providing CBRN Risk assessment, observing Non-Proliferation efforts, CBRN OSINT.... ☢️☣️☠️👽
Dr Ian J Stewart @ian-j-stewart.bsky.social 🏴🇬🇧ExecDir James Martin Center for Nonproliferation Studies DC @miis Past @DefenceHQ, @warstudies. Nonpro, emerging tech, China. Nuc engineer. Phd War Studies. http://nonproarchive.com
Nuclear Threat Initiative @nti.org A nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging tech threats imperiling humanity.
Chase @chalexthegreat.bsky.social Nuclear weapons policy wonk. Opinions my own.
SOMA
RTs≠endorsements. he/him/his
Dr. Tara Drozdenko @tdrozdenko.bsky.social Director, Global Security Program @Union of Concerned Scientists. Working to reduce the risk of nuclear war, address the injustice and harm done by nuclear weapons, and move us closer to a world free from nuclear weapons. Oxford Comma enthusiast.
Nina Tannenwald @ninatannenwald.bsky.social Political scientist at Brown, focusing on nuclear weapons, WMD, norms and institutions in security, human rights, ethics and laws of war.- W woolaf @woolaf.bsky.social Nuclear nerd and lover of baseball. Owner of the cutest dog in the world.
Adam Mount @handle.invalid Deterrence, nuclear strategy, progressive foreign policy.
Fmr. FAS, CAP, CFR, Ph.D. Government, Georgetown.
Bio: ajmount.com.
Banners: @UAHIRISE.
Andrew Facini @andrewfacini.com Senior Fellow, @councilonstrategicrisks.org working on nuclear weapons policy. Teaching and such at Harvard Extension. Views my own.
Nuke policy starter pack! https://go.bsky.app/8jiQV43
Ankit Panda @nktpnd.bsky.social Stanton Senior Fellow, Carnegie Endowment for International Peace; Author of ‘THE NEW NUCLEAR AGE’ (Polity) & ‘KIM JONG UN AND THE BOMB’ (Hurst/Oxford)
Subscribe to my newsletter (Nukesletter): https://panda.substack.com/
Dave Schmerler @schmerler.bsky.social 
Michael Kofman @michaelkofman.bsky.social Senior Fellow, Carnegie Endowment. Defense analysis with a focus on the Russian and Ukrainian militaries.
Michael Duitsman @duitsmanms.bsky.social Fellow at the Foreign Policy Research Institute. Rocket propulsion and radiological security (usually not at the same time). Opinions my own. Faves/RTs ≠ endorsements
Catherine Dill @catherinedill.bsky.social Formerly known as atomic_pickles, but still thinking about atomic pickles. Fancies: gardens, birds, mountains & rocks, satellites, Delftware, N95s. She/her. Only personal views reflected.
Stephen Young @atomicwonk.bsky.social Advocate for more sensible nuclear weapons policies, firm believer that we should not live in a world where hundreds of millions could be dead in an hour. Associate Director for Government Affairs, Global Security Program, Union of Concerned Scientists
Tom Bielefeld @tombielefeld.bsky.social Researcher/Consultant/Trainer #NuclearSecurity & #Nuclear #Nonproliferation; @INS_Forum; @WINS_org; formerly Harvard's @BelferCenter; Chronotype/B, from #Bremen (Contact via https://sites.google.com/site/tombielefeld/)
Nick Kodama @nickkodama.bsky.social PhD candidate at Georgetown | Researching nukes, IR, Japan, East Asia | Also posting photos of my cat and food.
Laura Grego @lauraegrego.bsky.social Senior scientist & research director, Global Security Program, ucsusa.org. Space, missile defense, nuclear weapons. 
George William Herbert @georgewherbert.bsky.social IT/Cloud/SRE/PE, rockets & missiles, nukes not going bang, space, CS, ships. YIMBY & amateur transit geek. Part time adjunct @ miis.edu teaching Missiles & Missile Defense. I speak for myself only not $DAYJOB. V95.45XA I do #OSINT against nuclear missiles.
Jamie Withorne @jamiewithorne.bsky.social Nuclear weapons, international politics, and “”emerging”” technology.
Doctoral Research Fellow in Political Science, University of Oslo
LearnWMD Spreadsheet and Substack: www.jamiewithorne.com
Aaron Stein @aaronstein1.bsky.social President/CEO @fpri.bsky.social; Podcast w/ blogfather @armscontrolwonk.bsky.social; Recent Substacker; Author: US War Against ISIS. Views are all my own
Jeffrey Lewis @armscontrolwonk.bsky.social William J. Perry Lecturer at Stanford CISAC & Distinguished Research Fellow FPRI. Member of the Bulletin of Atomic Scientists Science and Security Board & National Academies Committee on Int’l Security and Arms Control.
Geoff Brumfiel @gbrumfiel.bsky.social I'm an editor/correspondent for NPR. Mostly smart on the radio. Mostly stupid on everywhere else.
ChatGPT describes me as: "Aerospace sleuth, nuclear nerd and NPR Superfan — with a side of surreal humor."
Signal: gbrumfiel.13
https://geoffbrumfiel.net/
Dan Vergano @danvergano.bsky.social Get AIP FYI Science Policy newsletter: https://www.aip.org/newsletters
Director Science Policy News, Editorial at AIP
Washington, D.C.
Opinions my own. Reposts are not endorsements.
Signal: Delta.357
https://www.linkedin.com/in/dan-vergano-93908b4/
Joseph Dempsey @josephhdempsey.bsky.social Research Associate for Defence & Military Analysis,
The International Institute for Strategic Studies
Matt Korda @mattkorda.bsky.social I count nukes for the Federation of American Scientists + the Stockholm International Peace Research Institute. 🇨🇦 Views my own.
David Burbach 🇺🇸 @dburbach.bsky.social Prof. National Security and International Relations. Space security, civil-military relations. Cats, science, photography for fun. Providence RI; Oregon at heart! Personal views ONLY; no govt resources used. Assoc Ed @TNSR.org
Scott LaFoy @wslafoy.bsky.social Open Source Analysis of ballistic missiles, nuclear weapons, BMD, DPRK, & PRC.
Vice President of Nuclear and Technology Security Programs, Exiger.
Making podcasts over at https://www.armscontrolwonk.com/
All opinions my own.
Robert Farley @drfarls.bsky.social Co-founder Lawyers, Guns and Money. Works at Patterson School of Diplomacy and International Commerce at the University of Kentucky
Pavel Podvig @russianforces.org Russian nuclear forces, nuclear arms control, disarmament, verification. Strictly personal views here.
All coordinates are at http://russianforces.org/podvig
Decker Eveleth @dexeve.bsky.social PRC and DPRK strategic forces analyst with CNA. BA Reed College, MA Middlebury Institute. NSF GRFP. 
Alex Wellerstein @wellerstein.bsky.social Nuclear historian. Prof@Stevens Institute of Technology. Visiting researcher@Nuclear Knowledges, Sciences Po, Paris. Senior Fellow@thebulletin.org. Author: THE MOST AWFUL RESPONSIBILITY (2025). Creator of NUKEMAP. Blogging @ https://doomsdaymachines.net.
Emma Smith @ameliairheart.bsky.social 🏳️⚧️ she/her
Dan Nexon @dhnexon.net Professor in the Department of Government and the School of Foreign Service at Georgetown University.
Power Politics | Empires | International Order
dhnexon.net | https://www.lawyersgunsmoneyblog.com | duckofminerva.com
Funranium (AKA Phil Broughton) @funranium.bsky.social The Cenobite of Sharing
The Black Blood of the Earth and Steins of Science guy. Everyone’s friendly internet laser safety officer and health physicist. Happy to answer Antarctica questions.
www.funraniumlabs.com
Gerry Doyle @mgerrydoyle.bsky.social Bloomberg News Global Defense Editor. Novelist, aviation geek, bartender, dad. Ex-NYT, Reuters. Grew up in Midwest, moved to Mideast. Views my own. Wrote a fun book about Chinese missiles: https://tinyurl.com/2p94pay6
Ad astra per aspera
Shashank Joshi @shashj.bsky.social Incoming Washington bureau chief at The Economist. Previously defence editor for eight years.
Visiting Fellow at Department of War Studies, KCL. For speaking engagements: https://chartwellspeakers.com/speaker/shashank-joshi
Jonathan McDowell @planet4589.bsky.social Astrophysicist
Support the work of Jonathan's Space Report:
https://www.gofundme.com/f/fund-jonathans-space-report-library-transition
Lawrence Freedman @ldfreedman.bsky.social Emeritus Professor of War Studies King's College London. Latest Book Strategists and Strategy: collected essays, 2014-2024. Substack Comment is Freed https://samf.substack.com/
Kelsey Atherton @atherton.bsky.social War, robots, & bad futures but imagining better. I edit @cipolicy.bsky.social's International Policy Journal, opinions my own. Unitarian Universalist. He/him. Husband to @alymay.bsky.social & father of 2.
Front takes towards enemies.
Bellingcat @bellingcat.com Bellingcat is a global collective uncovering facts to hold power to account. Our work is independent. Our methods are public. Our community is global.
Want to support our charity? bellingcat.com/donate
Rocky Flats Chimney Sweep 🇺🇸 @midlifesuezcrisis.bsky.social Materials science & nukes. Deterrence & what comes after.
Patriot, liberal firebrand, Catholic, last of the China hawks, Nitzean superman. Victory is possible.
Opinions my own / posts off the clock
Rekindling hearts in a world that grows chill.
Hans Kristensen @nukestrat.bsky.social Director, Nuclear Information Project, Federation of American Scientists. Tracking nuclear arsenals, co-author of Nuclear Notebook, SIPRI Yearbook. Opinions my own.
Website: https://fas.org/initiative/nuclear-information-project/
Casillic @casillic.bsky.social Critical Infrastructure, High Consequence / High Integrity Systems, Space, Nuclear, Mathematics, Public Health, HPC
Moderately MOCO @moderatelymoco.bsky.social Your local MOCO MD News
- Schools | Government | Small Business Highlight
- Encourage and help people follow local issues
Cheryl Rofer @cherylrofer.bsky.social Retired nuclear scientist. Worked in Estonia, Kazakhstan, and Los Alamos on environmental cleanup, nuclear nonproliferation, and the nuclear fuel cycle.
She/her.
Blogs at Nuclear Diner and Lawyers, Guns & Money
Photo: Semipalatinsk Nuclear Test Site
Patrick Malone @pmalonejourno.bsky.social Investigative journalist at The Seattle Times
Jordan Hibbs @jordanhibbs.bsky.social Senior Nuclear Policy Advisor | 📍Washington, DC | Personal Account - Views are my own.
Stephen Schwartz @atomicanalyst.bsky.social Editor/Co-author, “Atomic Audit: The Costs and Consequences of US Nuclear Weapons Since 1940” • Nonresident Senior Fellow, Bulletin of the Atomic Scientists • Nuclear weapons expert (history, policy, costs, accidents) and tracker of the nuclear “Football.”
Collin Fisher 🇺🇦 @collinfisherphd.bsky.social I'm a teacher, writer, consultant, and academic researcher with a Phd in International Relations. I like being away and out in nature.
Kingston Reif @kingstonareif.bsky.social Senior International/Defense researcher at the RAND Corporation. Former DASD for Threat Reduction and Arms Control + Arms Control Association. Wisconsin sports fanatic. Personal account.
Frank O'Donnell @frank11285.bsky.social Research Program Head, @apln.network
Adjunct Fellow, @eastwestcenter.bsky.social
Opinions my own, reposts ≠ endorsement.
https://www.linkedin.com/in/frank-o-donnell-b84675158
Montgomery County, MD Government @montgomerycountymd.bsky.social The Official site for Montgomery County, MD government from Public Information Office
Dr. Lizzly Atoms @iamplatypus.bsky.social Particle physicist ➡️ nuke physicist. R&D, some policy thoughts. Formerly neutrinos, now neutrons. Bear, 50s/60s camp sci-fi, & western hat aficionado. Lousy 𝄢ist. Opinions mine, especially the bad ones. Follow/❤️/🔃 ≠ E, &c. AFOL. Trust the process. ᕕʕ•ᴥʔ୨⚛
Joe Cirincione @joecirin.bsky.social I don’t post often, so I try to make every one count. I’ve worked for 45 years in government, think tanks, Georgetown U. and philanthropy. I write, lecture and do media interviews. On Substack at: joecirincione.substack.com
🇵🇸Martin “Doomsday” Pfeiffer🖖🏳️🌈 @nuclearanthro.bsky.social Anthro PhD Candidate.
nukes, cats, semiotics, FOIA, existential threats, heritage, nationalism, secrecy, etc.
QUEER
RT/Fave/etc ≠agree
he/him
http://patreon.com/nuclearanthro
http://paypal.me/nuclearanthro
https://osf.io/46sfd/
Katie Mummah @nuclearkatie.com Nuclear engineer. nuclear: reactors, history, waste, nonproliferation, space, humor. "Tells uranium's life story". Lives in New Mexico. UW-Madison, UIUC alum. Outdoors when I'm not working. Views mine alone, like/rt not endorsements. she/her
Colin Demarest @demarest-colin.bsky.social 💥 author, future of defense, @axios.com.
📩 cdemarest(at)protonmail(dot)com.
™️ https://www.axios.com/signup/future-of-defense
Nathan Anderson @atomicauditor.bsky.social Director of the U.S. Government Accountability Office's nuclear cleanup and environmental liabilities portfolio. Fly fisherman with strong ties to the Pacific Northwest.
Alisa @unseveredalisa.bsky.social Puzzler, climber, bookworm, nuclear nerd, cat lady
Ali C @alic11.bsky.social DC/CA. Likes spreadsheets.
Bluesky @bsky.app official Bluesky account (check username👆)
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