Philipp G. Rombach @philipprombach.bsky.social Research Associate, German Institute for International and Security Affairs (SWP Berlin) | formerly Lawrence Livermore National Laboratory | 2025 CSIS PONI Nuclear Scholar | MALD at The Fletcher School | MSc Electrical Engineering at TU Munich
Sam Lair @slair.bsky.social Fellow at FPRI | MIIS NPTS '24 | RTs/views my own etc. Also @sam_lair on Twitter
Mike Poznansky @mpoznansky.bsky.social Associate Professor @ Naval War College | CFR Term Member | Author of "In the Shadow of International Law" (OUP 2020) | Views my own.
Marietje Schaake @marietjeschaake.bsky.social Proud European 🇪🇺 Fellow at Stanford 👩🏼💻 column in FT 🗞️Member of European Parliament 2009-2019 📕Author: The Tech Coup
Michael C. Horowitz @mchorowitz.bsky.social Professor @Penn @perryworldhouse. Senior Fellow @CFR. Former DASD for Force Development and Emerging Capabilities. Defense, #AI, and innovation. Always Boston. Views my own.
Malte Göttsche @mgoettsche.bsky.social Physicist and peace researcher | Head, Science for Nuclear Diplomacy @prif.org @tuda.bsky.social | Speaker @cntrarmscontrol.org
SIPRI.bsky.social @sipri.org SIPRI is an independent international institute dedicated to research into conflict, armaments, arms control and disarmament.
Website🔗: https://www.sipri.org/
Subscribe🔔: http://bit.ly/SIPRIsubscribe
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.
Jaewoo Shin @shinjaewoo.bsky.social Sr Analyst, Open Nuclear Network
Shane Ward @shaneward.bsky.social 🇬🇧 📍 Washington, D.C.
Nuclear Policy grantmaker @ Longview Philanthropy | Fmr. CSIS Nuclear Scholar | ELN NEVER
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.
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
Foreign Affairs @foreignaffairs.com A magazine of U.S. foreign policy and international affairs, founded in 1922. https://www.foreignaffairs.com/
Sign up for our newsletters here: http://foreignaffairs.com/newsletter
Maaike @maaikeverbruggen.bsky.social non-practicing intellectual on war & tech
NL/EN
🇵🇸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/
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.
Victor Asal @victorasal.bsky.social UAlbany professor Studies insurgency/ terrorism & Ethnic & LGBTQ Discrimination & Pedagogy.
Decker Eveleth @dexeve.bsky.social PRC and DPRK strategic forces analyst with CNA. BA Reed College, MA Middlebury Institute. NSF GRFP. 
Matt Korda @mattkorda.bsky.social I count nukes for the Federation of American Scientists + the Stockholm International Peace Research Institute. 🇨🇦 Views my own.
Asif Siddiqi @historyasif.bsky.social New Yorker. Historian of Science and Technology. Space. Music. Soviet History. Comics
Taylor Fravel @fravel.bsky.social Studying China's foreign and security policies and director of MIT's Security Studies Program
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.
Nikolas Gvosdev @fpriorbis.bsky.social Someone who follows geopolitical and geo-economic trends and studies how national security decisions get made. All comments are personal opinions and do not reflect any official/institutional views.
https://www.linkedin.com/in/nikolas-gvosdev-925485301/
Bastian Herre @bastianherre.bsky.social Politics & Society Lead @ourworldindata.org. I make research on democracy, human rights, and conflict easier to access and understand. he/him
Check out my work: https://ourworldindata.org/team/bastian-herre
Aaron Bateman @aaronbateman.bsky.social Assist. Prof. of History & Intl Affairs at George Washington U. | Book #1 : "Weapons in Space" | Book #2 "Wiring an Empire" (contracted w/ MIT Press)
Mark Bell @marksbell.bsky.social Associate Professor of Political Science at the University of Minneota, mostly studying nuclear weapons, international security, and US foreign policy. Opinions mine. www.markbell.org 
Marina Henke @mephenke.bsky.social Professor at Hertie School, Berlin and SAIS, Washington DC. European security and defense. Hot dog lover 🤤
roxanne panchasi @rpanchasi.bsky.social assoc prof-sfu history; rutgers phd; c20-21 france & empire; nuclear harm/fear/memory; fiction/film/art/music; thievery; founding/former host-new books in french studies; brown; settler; NOT my employer
roxannepanchasi.com
——FREE PALESTINE——
Jacqueline L. Hazelton @drjlhazelton.bsky.social Political scientist. IR. International security. RT=not endorsement. Author of award-winning book "Bullets Not Ballots: Success in Counterinsurgency Warfare" from Cornell. She/her.
Austin Carson @carsonaust.bsky.social Prof, dad, travel, outdoors, Pistons
At UChicago since 2015
Iskander Rehman @irehman.bsky.social Assistant Professor at UT Austin's Clement Center. Author of "Planning for Protraction" and "Iron Imperator." Non-Resident Senior Fellow at the Atlantic Council. Applied history, defense strategy & Asian security.
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
Mauro Gilli @maurogilli.bsky.social Professor of Military Strategy and Technology at the Hertie School in Berlin. Great powers rivalry, future of war, tech competition. Born 🇮🇹, 9y 🇺🇸, 9y🇨🇭, 🇩🇪 https://sites.google.com/site/maurogilli2/
Matt Fuhrmann @mcfuhrmann.bsky.social Political science professor at Texas A&M. International relations, nuclear weapons, alliances, interstate conflict.
Corentin Brustlein @corentinbr.bsky.social Former think tanker and lecturer on strategy and nuclear weapons, turned bureaucrat. Views are my own.
Charli Carpenter @charlicarpenter.bsky.social only-slightly-mad scientist, int’l law prof, author of books on civilians & war. fears tyrants & nukes; welcomes spiders & refugee children. loves whitewater.
Alexander Lanoszka @lanoszka.bsky.social Associate professor at the University of Waterloo (Canada); visiting professor at the College of Europe in Natolin (Poland); and author of Military Alliances in the Twenty-First Century (Polity, 2022).
www.alexlanoszka.com
Marion Messmer @mgmessmer.bsky.social Programme Director for International Security at Chatham House
Former BASIC, King's College London
Derek Johnson @derekjesq.bsky.social Chaos Muppet, Order Rising. CEO, ResearchCollaborative.org. Young(ish) Leader, Munich Security Conference + Friends of Europe. Former head of GlobalZero.org. Radicalized by basic decency. Made in #Iowa with parts from #Iran. he/him 🇦🇲
Laura Grego @lauraegrego.bsky.social Senior scientist & research director, Global Security Program, ucsusa.org. Space, missile defense, nuclear weapons. 
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
Dan Altman @daltmanir.bsky.social Associate Professor of Political Science at Georgia State University. Conquest, faits accomplis, deterrence, coercion failure, causes of war. Website: dan-altman.weebly.com
Alex Bollfrass @bollfrass.bsky.social Nuclear weapons and intelligence history.
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
Maria Rost Rublee @mariarostrublee.bsky.social International security, nuclear politics, Indo-Pacific security, diversity & inclusion | Professor, University of Melbourne | President, Women in International Security-Australia
Eric Brewer @ebrewer.bsky.social Deputy VP at Nuclear Threat Initiative. Previously Director for Counterproliferation at the National Security Council and Deputy National Intelligence Officer for WMD at the National Intelligence Council. Personal account/views my own.
Jim Goldgeier @jimgoldgeier.bsky.social Senior advisor, Bridging the Gap; Fellow at Center for Advanced Study and FSI Research Affiliate, Stanford; Non-resident fellow, Kennan Institute. Was a professor for 35 years and a dean for six. Views are my own. www.jamesgoldgeier.com.
J. Luis Rodriguez @jluisrodriguez.com Assistant Professor at George Mason's Schar School of Policy and Government | Affiliate at Stanford CISAC | Adjunct non-resident fellow at CSIS PONI | PhD from Johns Hopkins | International security, international law, and Global South | 🇺🇸 🇲🇽 🏳️🌈
Lauren Sukin @laurensukin.bsky.social Associate Professor, Department of Politics and International Relations, Nuffield College, University of Oxford | Nuclear Weapons | Alliance Politics | Emerging Technology | Contact: lauren.sukin@politics.ox.ac.uk |
Sanne Verschuren @sannecjv.bsky.social Assistant Professor of International Security at the Pardee School of Global Studies, Boston University || Ph.D. from Brown University || Formerly at Sciences Po, CISAC, Belfer Center || Military Technology, Strategy & Nuclear Weapons
Stanford CISAC @stanfordcisac.bsky.social Stanford's Center for International Security and Cooperation produces knowledge to build a safer world and trains the next generation of security specialists.
Visit us at: https://cisac.fsi.stanford.edu/
Harold Trinkunas @htrinkunas.bsky.social Deputy Director at Stanford’s Center for International Security and Cooperation. Usual disclaimers apply.
https://cisac.fsi.stanford.edu/people/harold-trinkunas
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
Dylan Spaulding @dkspaulding.bsky.social Senior Scientist, Union of Concerned Scientists, Global Security Program. Views are my own.
Blog: blog.ucsusa.org/author/dylan-spaulding/
ICAN @nuclearban.bsky.social International Campaign to Abolish Nuclear Weapons.
2017 Nobel Peace Prize winner.
A coalition of 700+ NGOs in 100+ countries working with governments, ICRC and the UN to eliminate nuclear weapons. #nuclearban
XanthH @xanthh.bsky.social #NOWAR! Scottish-German painter, writer, gardener, actor, photographer and family historian. Editor of German language online lexicon on nuclear weapons, "Atomwaffen A-Z". Living in Berlin, often in Greece.
Global Nuclear Order BISA Working Group @gnobisa.bsky.social Dedicated to promoting and disseminating multidisciplinary research on the politics, culture and history of the nuclear age.
https://www.bisa.ac.uk/members/working-groups/gno
American Nuclear Society @americannuclear.bsky.social Not-for-profit professional society dedicated to advancing peaceful uses of #nuclear science and technology. Since 1954. Join us at www.ans.org
Eliana Johns @elianajjohns.bsky.social PhD Student @ University of Maryland & Research Advisor with Nuclear Information Project @ Federation of American Scientists | Talks about nukes and satellite imagery (views are my own)
Mackenzie Knight-Boyle @mknight.bsky.social Research and Project Manager @ Federation of American Scientists - Nuclear Information Project
Mother to a demonic chihuahua named Pippin 🐾
Views are my own
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
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
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
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
Ward Hayes Wilson @wardhayeswilson.bsky.social Realist working to eliminate nuclear weapons. (Not an IR “Realist,” just, you know, an everyday realist.)
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.
Arms Control Association @armscontrolnow.bsky.social 
CNTR | Arms Control Research @cntrarmscontrol.org This is the Cluster for Natural and Technical Science Arms Control Research (CNTR) | Based @prif.org, @tuda.bsky.social and @jlugiessen.bsky.social | With funding from @diplo.de
https://www.cntrarmscontrol.org/
Bonnie Glaser @bglaser.bsky.social Managing Director, Indo-Pacific Program, German Marshall Fund @GMFAsia, China, Taiwan, Indo-Pac, Europe-China, RT≠ endorsement
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
Mansoor Ahmed @mansoorahmed.bsky.social Hon. Lecturer SDSC, Australian National University | IR, nuclear weapons, fissile materials, South Asia, conventional deterrence | Formerly CISS Islamabad, Harvard’s Belfer Center, QAU | Author Pakistan’s Pathway to the Bomb | Views personal
@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
Douglas Selvage @deselv.bsky.social Independent Historian. Expert on Soviet-bloc history, active measures, Stasi and KGB. RT does not mean endorsement. Views are mine, not those of my employer.
Carolina Pantoliano @carolinapantoliano.bsky.social Research Associate in Nuclear Arms Control and Disarmament at the University of Glasgow.
Dan Zhukov @danzhukov.bsky.social program coordinator at Berkeley Risk and Security Lab • he/him • nuclear arms control researcher • formerly at UCLA, Stanford CISAC, and KCL • all views mine
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
Union of Concerned Scientists @ucs.org The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems.
ucs.org
Laicie Heeley @laicie.bsky.social Founder & CEO @inkstickmedia.com. Host of Things That Go Boom from PRX & Inkstick. Former wonk.
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/
Alexander H. Montgomery @alexmontgomery.bsky.social Professor @reed.edu
Nonresident Senior Fellow @newamerica.org
IR/SNA/STS/WMD
alexmontgomery.com
http://tinyurl.com/oxhbpo
I'm not a donkey, I don't have a field.
JD Menton @jdmenton.bsky.social Fellow @ Carnegie Endowment Nuclear Policy Program; nukes, non-pro, and tech governance; recovering journalist, itinerant Floridian
Jonathan R. Hunt @jrhuntx.bsky.social Assistant Professor of Strategy and Operations, US Naval War College. Author of THE NUCLEAR CLUB and co-editor of THE REAGAN MOMENT. Views represent neither the US Navy, Department of Defense, nor US government.
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.
Héloïse Fayet @hfayet.bsky.social Chercheuse atomique au Centre des études de sécurité de l’Ifri, passée par le ministère des Armées. Également déléguée générale de WIIS France et membre du Young Generation Leadership Network.
« Pasionaria de la bomba » selon RB.
Spenser A. Warren @spenserawarren.bsky.social Stanton Nuclear Security Fellow, Harvard's Belfer Center | Formerly UC IGCC | PhD, Indiana University | Michigan State Alum | Work on nuclear weapons, emerging tech, Russia, international security | Also football and Star Wars
Elizabeth N. Saunders @profsaunders.bsky.social Professor of Political Science, Columbia. New Book: The Insiders' Game: How Elites Make War and Peace https://press.princeton.edu/books/paperback/9780691215808/the-insiders-game
Steph, PhD @twistedzen.bsky.social Nukes and national security. Researcher focused on US nuclear policy and deterrence.
Kyungwon Suh @kyungwon.bsky.social Senior Lecturer at ANU SDSC. Ph.D. from Syracuse. I study nuclear weapons, interstate coercion, alliance politics, and great power politics.
Fintan Hoey @fintanhoey.bsky.social Historian of U.S.-Japanese relations at Franklin University Switzerland. 🇮🇪🏳️🌈
Joseph O'Mahoney @jomahoney.bsky.social Associate Professor of International Relations at University of Reading.
https://sites.google.com/site/jpomahoney/
ORCID: 0000-0002-6316-1771
Dr. Vincent Intondi @vincentintondi.bsky.social Historian, Author-African Americans Against the Bomb and Saving the World from Nuclear War.
Bo Jacobs @bojacobs.bsky.social Nuclear historian, Emeritus @ Hiroshima Peace Inst, visiting @ #UNSW. I research the global #hibakuksha, #nuclear testing, production and waste. #PDX #STS
Nuclear Bodies: The Global Hibakusha (Yale 2022)
https://nuclearbodies.com
https://bojacobs.net
Joel Petersson Ivre 유엘 @joelivre.bsky.social 🇸🇪 in 🇰🇷 | "Yoo-el" | Senior Policy Fellow at Asia-Pacific Leadership Network | Nuclear Non-Proliferation and Disarmament | Shilling for Big Disarma | views mine and not to be taken too seriously | same id on the Old Place
Tristan A. Volpe @tristanvolpe.bsky.social Assistant Prof, Naval Postgraduate School; Nonresident Fellow, Carnegie Endowment. Author of LEVERAGING LATENCY (http://bit.ly/3RXHUhM).
https://tristanvolpe.com
Christopher Clary @claryc.bsky.social Assistant Professor of Political Science, University at Albany; Nonresident Fellow, Stimson Center
Rhys Crilley @rhyscrilley.bsky.social 🌍 Lecturer in International Relations
📝 Writing about politics & culture
☢️ Author of Unparalleled Catastrophe
Frank Kuhn @frankkuhn.bsky.social Doctoral Researcher @PRIF.org // Nuclear Deterrence and Arms Control // Cold War History // Military Technology, Operations and Strategy // Opinions my own