Sebastian Brixey-Williams @sebbw.bsky.social Executive Director, BASIC | The British American Security Information Council
Fred Kaplan @fredmkaplan.bsky.social Slate's War Stories columnist; author of The Bomb, Dark Territory, The Insurgents, 1959, Daydream Believers, The Wizards of Armageddon, and--most recently--A Capital Calamity (a novel); also jazz critic for Tracking Angle.
Ploughshares @ploughshares.bsky.social Building a future beyond nuclear fear. We aim to reduce and eventually eliminate #nuclearweapons & promote stability where they exist. 
Lauren Harper @laurenleharper.bsky.social Daniel Ellsberg Chair on Government Secrecy at @freedom.press. Interested in reducing overclassification, FOIA reform, enforcement of the Presidential Records Act, and preservation of federal records. Opinions mine. Signal leharper.89
Cole Donovan @colesci.bsky.social Director of Science Policy and Advocacy, Stand Up for Science Foundation. Former White House OSTP, Federation of American Scientists, NOAA Office of Space Commerce, National Academies, State Department.
Science advocate. Geeky painter. Views own.
@renny-babiarz.bsky.social @renny-babiarz.bsky.social 
Erik English @erik-english.bsky.social 
James Acton @nuclear-jim.bsky.social Co-director of the Nuclear Policy Program at the Carnegie Endowment For International Peace. I spend a lot of time thinking about nuclear weapons, advanced nonnuclear technology, and escalation.
Olamide Samuel @olamidediy.bsky.social 
Sébastien Philippe @sebphilippe.bsky.social I am an Assistant Professor of Nuclear Engineering and Engineering Physics at UW-Madison.
Clara Langevin @cclangevin.bsky.social AI Policy Specialist at @scientistsorg.bsky.social I think about AI policy in the US and Brazil- all views are my own. Lifelong Cruzeirense 💙🦊💫
Jon Letman @jonletman.bsky.social Hawaii-based independent journalist covering human rights, the environment, and the impact of US foreign policy, militarism, and nuclear weapons in the Asia-Pacific region and beyond.
Geoff Wilson @nuclearwilson.bsky.social Stimson Center Distinguished Fellow. Nuke and NatSec Thoughts. Sometimes boxer, constant matriarchy supporter, ally, husband, and dog dad. Views my own, etc.
mary olney fulham @maryfulham.bsky.social comms @nti.org
Shane Ward @shaneward.bsky.social 🇬🇧 📍 Washington, D.C.
Nuclear Policy grantmaker @ Longview Philanthropy | Fmr. CSIS Nuclear Scholar | ELN NEVER
Mariana Budjeryn @mbudjeryn.bsky.social Researcher of nuclear, Ukraine, and nuclear Ukraine. Author of Inheriting the Bomb. MIT Center for Nuclear Security Policy, Brookings and RUSI nonresident, NAS CISAC, ACONA.
Debak Das @debak.bsky.social Assistant Professor at the Josef Korbel School of Global and Public Affairs, University of Denver | PhD from Cornell | International Security, Nuclear Weapons, Foreign Policy | Affiliate at Stanford CISAC, Sciences Po (Paris)
www.debakdas.com
Jaewoo Shin @shinjaewoo.bsky.social Sr Analyst, Open Nuclear Network
Tong Zhao @tongzhao.bsky.social Senior fellow @carnegieendow.bsky.social
Nuclear, arms control, nonproliferation, new mil tech, Asia-Pacific security, US-China.
Views my own.
https://carnegieendowment.org/people/tong-zhao?lang=en
ElandPrincess @elandprincess.bsky.social Mom. Lawyer. Diplomat. Polyglot. Disarmament Expert. Theatre Kid. Big fan of a holistic approach to life. Empathy is a choice. Views are all my own.
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.
Jamie Kwong @jamiekwong.bsky.social Fellow at the Carnegie Endowment for International Peace | KCL PhD | Nukes and nonpro | RT≠endorsement
Avery Restrepo @averyrestrepo.bsky.social Online community manager for @thebulletin.org. Professional doomscroller. (All opinions my own.)
David E. Hoffman @davidehoffman.bsky.social davidehoffman.com — The Oligarchs, The Dead Hand, The Billion Dollar Spy, and Give Me Liberty. Washington Post 2023 editorial series “Annals of Autocracy”: https://wapo.st/3K8LVNd
Jackson du Pont @jacksondupont.bsky.social Currently Kings War Studies | Fmr @ CSRisks and Kerry Fellow @ Yale | focusing on how to bring lasting solutions to wicked problems | posts my own
Patricia Jaworek @patriciajaworek.bsky.social 💭 Global Nuclear Policy @ NTI
📍 Washington, DC
Mac Hamilton (she/her) @machamilton.bsky.social Anti-militarism, pro-peace & community care. Director of Peace and Security at ReThink Media. Working on nuclear nonproliferation, civilian protection, strengthening diplomatic approaches to political challenges.
Grethe Østern @gretheostern.bsky.social Special advisor on weapons policy at Norwegian People's Aid. Editor of Nuclear Weapons Ban Monitor. Member of International Steering Group of International Campaign to Abolish Nuclear Weapons (ICAN). Formerly co-chair of Cluster Munition Coalition.
Leya @leyamohsin.bsky.social making policy more evidence-based @scientistsorg.bsky.social | alum of @arnoldventures.bsky.social + @teachforamerica.bsky.social
views are my own
Irene Ngun @ireneone.bsky.social AD Policy Entrepreneurship. Previous lives: Urban Institute Education Data & Policy Center; National Academies Higher Ed & Workforce
John Carl Baker @johncarlbaker.bsky.social foreign policy, international peace and security, nuclear weapons, antiquity
Words: Nation, Bulletin of the Atomic Scientists, NK News, US Institute of Peace, New Republic, elsewhere
seniores tollunt omnia
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
David Rothkopf @djrothkopf.bsky.social Husband of C, Dad of J & L, CEO/Editor-The DSR Network, Host-Deep State Radio, Siliconsciousness, other pods, Columnist-The Daily Beast, author of many books, also see my "Need to Know" Substack (djrothkopf.substack.com)
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
Karinna Gerhardt @karinnagerhardt.bsky.social NYU Law, Class of 2028
Allie Maloney @alliemaloney.bsky.social Scoville Fellow at Federation of American Scientists
Ise Midori @isemidori.bsky.social im\geo\os | Unemployed shill.
isekaimint on Twitter
Krakek @krakek.bsky.social a Quasi-NEET interested in all things military.
Current focus on all things nuclear.
Sara Beth Marchert @sbmarchert.bsky.social Nuke nerd. Not my employer, likes/RTs ≠endorsements
Sneha @snehanair.bsky.social nuclear security gal
Formerly NNSA, Stimson Center, CTBTO and OPCW
views my own, reposts/likes ≠ endorsement
Franziska Stärk @franziskastaerk.bsky.social Researcher, Institute for Peace Research and Security Policy at the University of Hamburg (IFSH) || PhD Candidate, Erasmus University Rotterdam || Nuclear arms control & critical security studies
https://ifsh.de/en/staff/staerk
Inkstick Media @inkstickmedia.com Human. Global. Security.
Nonprofit news about our life with endless war.
https://inkstickmedia.com/
Nuclear Threat Initiative @nti.org A nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging tech threats imperiling humanity.
Hanna Notte @hannanotte.bsky.social Russia | Director for Eurasia @JamesMartinCNS | Snr Associate @csiserep | Fellow @kennaninstitute | Book: WE SHALL OUTLAST THEM | http://hannanotte.com | Berlin-based
Nicole Grajewski @nicolegrajewski.bsky.social Assistant Professor at Sciences Po CERI | Associate with Harvard’s Managing the Atom | working on nuclear issues involving Russia and Iran | author of Russia and Iran: Partners in Defiance from Syria to Ukraine (OUP/Hurst)
Lindsay Rand @lrand11.bsky.social Research scholar @ Berkeley Risk and Security Lab || Carnegie Non-Resident ||socio-technical analyses for nuclear, quantum, and “emerging” tech || PhD from UMD
Colin Zwirko @colinzwirko.bsky.social Analyst at NK News / NK Pro, investigations and analysis about North Korea and satellite imagery, state media, military, Kim family developments etc.
https://www.nknews.org/content_author/colin-zwirko
Ben Loehrke @nonstrategic.bsky.social Program Officer for Nuclear Weapons at Stanley Center for Peace and Security
Ex-Twitter @nonstrategic
https://stanleycenter.org
Council for a Livable World @livableworld.bsky.social Political action to reduce and eventually eliminate nuclear threats. We've helped elect 400 Members of Congress since 1962.
livableworld.org
Bulletin of the Atomic Scientists @thebulletin.org The best thinking on existential threats since 1945. Nuclear risk, climate change, and disruptive technologies. We set the #DoomsdayClock. thebulletin.org
@emmaclairefoley.bsky.social @emmaclairefoley.bsky.social 
François Diaz-Maurin @francoisdm.bsky.social Nuclear editor @thebulletin.org. Fmr MacArthur Found. & Marie S.-Curie fellow @stanfordcisac.bsky.social. Fmr engineer in US/French nuclear ind. 1st gen. Father x3. Cello. Synthbass. Kyokushin. Autism. | Tips: francois@thebulletin.org Signal: francoisdm.21
Tom Z. Collina @tomcollina.bsky.social Senior Policy Advisor, Ploughshares Fund. Coauthor, THE BUTTON. Proud husband, father, dog-person.
Alex Bollfrass @bollfrass.bsky.social Nuclear weapons and intelligence history.
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.
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/
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
Laura Grego @lauraegrego.bsky.social Senior scientist & research director, Global Security Program, ucsusa.org. Space, missile defense, nuclear weapons. 
Laicie Heeley @laicie.bsky.social Founder & CEO @inkstickmedia.com. Host of Things That Go Boom from PRX & Inkstick. Former wonk.
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
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/
🇵🇸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/
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/
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
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
Katie McCaskey @katiemccaskey.bsky.social Media & PR 🧪 FΔS - Federation of American Scientists (fas.org) - views all mine ❤️ emerging tech/innovation, active transportation, built/natural environment
kate k @kathrwn.bsky.social design + social + editorial at @scientistsorg.bsky.social | views my own | once and future jeopardy champion
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.
Daniel Robinson @quietflosthedan.bsky.social Global affairs watcher. Fundraiser. Go go lover. DC native
Federation of American Scientists @scientistsorg.bsky.social Striving for a safer world since 1945
science policy | nuclear weapons | clean energy | STEM education | artificial intelligence | data privacy | much much more
Alex Wellerstein @wellerstein.bsky.social Nuclear historian. Professor at Stevens Institute of Technology. Visiting researcher at Nuclear Knowledges program, Sciences Po (Paris). Author of THE MOST AWFUL RESPONSIBILITY (2025). Creator of NUKEMAP. Blogging at https://doomsdaymachines.net.
James Campbell @jamescampbell.bsky.social Fighting fire with (wild)fire (policy) |
DC | obligatory opinions are my own section
Nick Kodama @nickkodama.bsky.social PhD candidate at Georgetown | Researching nukes, IR, Japan, East Asia | Also posting photos of my cat and food.
Connor Murray @connormmurray.bsky.social 🇦🇹 in DC. Political Director and Research Analyst @LivableWorld & @Nukes_Of_Hazard. Opinions are my own.
Brandon Arcari @barcari.bsky.social Cybersecurity guy, used to be a nuke guy, recovering politics guy
anahita parsa (she/her) @anahitaparsa.bsky.social 🇬🇧🇮🇷🌸
Policy Fellow at basicint.bsky.social
prev. Prog Manager at METO
✨ nuclear disarmament and diplomacy, global order, #MENA, peace.
SOAS alum (x2) 🍉
Emma Pike @emmapike.bsky.social Nuclear disarmament, human security, and multilateral processes at Lex International.
Peace and human rights education everywhere, always. 
Beatrice Fihn @beafihn.bsky.social International law, security and weapons at Lex International. Senior Fellow @UNIDIR. Former Executive Director of ICAN, Nobel Peace Prize Laureate 2017.
🇸🇪in🇨🇭www.beatricefihn.com
Sam Lair @slair.bsky.social Fellow at FPRI | MIIS NPTS '24 | RTs/views my own etc. Also @sam_lair on Twitter
KJ Boyle @kjboyle.bsky.social Writer and Researcher. Philly sports enthusiast. Looking into revolving doors. Gov capacity, congressional oversight, aviation safety
Dr. Vincent Intondi @vincentintondi.bsky.social Historian, Author-African Americans Against the Bomb and Saving the World from Nuclear War.
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.”
Dave Schmerler @schmerler.bsky.social 
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.
Jeffrey Lewis @armscontrolwonk.bsky.social Distinguished Research Fellow FPRI, member of the National Academies Committee on International Security and Arms Control, and former member of the State Department's International Security Advisory Board.
Ward Hayes Wilson @wardhayeswilson.bsky.social Realist working to eliminate nuclear weapons. (Not an IR “Realist,” just, you know, an everyday realist.)
Adam Mount @ajmount.com Deterrence, nuclear strategy, progressive foreign policy.
Fmr. FAS, CAP, CFR, Ph.D. Government, Georgetown.
Bio: ajmount.com.
Banners: @UAHIRISE.
@douglasbshaw.bsky.social @douglasbshaw.bsky.social Imaginary provost of the make-believe university of human survival; promoting the creation and dissemination of knowledge to prevent nuclear war
Pavel Podvig @russianforces.org Russian nuclear forces, nuclear arms control, disarmament, verification. Strictly personal views here.
All coordinates are at http://russianforces.org/podvig
Eliana Johns @elianajjohns.bsky.social Senior Research Associate with Nuclear Information Project @ Federation of American Scientists & Grad Student @ Georgetown SFS | Talks about nukes and satellite imagery | (views are my own)
Decker Eveleth @dexeve.bsky.social PRC and DPRK strategic forces analyst with CNA. BA Reed College, MA Middlebury Institute. NSF GRFP. 
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/
Matt Korda @mattkorda.bsky.social I count nukes for the Federation of American Scientists + the Stockholm International Peace Research Institute. 🇨🇦 Views my own.