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
stromgade @stromgade.bsky.social News about Earth Observation. Author of http://satelliteobservation.net and http://therestlesstechnophile.com . Views my own.
Timothy Burke @bubbaprog.xyz Old Seminole Heights — Tampa — Florida — U.S.A.
Journalist. Consultant. Neighborhood trustee. Voting rights advocate. Non-profit theater board member. Citrus grower. Beagle foster dad. Wife guy.
Signal: 352.222.2706
https://timburkelegalfund.org
U.S. Consumer Product Safety Commission @cpsc.gov Your U.S. Consumer Product Safety Commission. Product safety info, data, and recalls. Standing for safety since 1972. Official account of the USCPSC. HQ: Bethesda, MD.
Subscribe for recall emails on CPSC.gov.
Report unsafe products on SaferProducts.gov
The 🇫🇷 Joint Staff - Millitary operations @frenchforces.bsky.social Official account of the French Joint Staff. Latest news on 🇫🇷 military operations.
➡️ @cemafr.bsky.social for the Chief of the French Defence Staff
➡️ @etatmajorfr.bsky.social for the French latest news
Tyler Rogoway @aviationintel.bsky.social Creator/Editor-In-Chief of TWZ.com. Gizmodo Media Group and Time Inc. alum.
Timur Kadyshev @kadyshev.bsky.social Wissenschaftlicher Mitarbeiter
https://www.hamburg-armscontrol.de/en/staff/timur-kadyshev-2/
IFSH https://bsky.app/profile/ifshhamburg.bsky.social
All views mine. RTs/Likes mean I found it interesting, not that I agree.
Profile photo ©IFSH
Sarah Erickson @saraherixson.bsky.social I research outer space security and WMDs @UNIDIR, PhD student @UMD school of public policy.
Project lead of the - 🌠https://spacesecurityportal.org 🌠
Matthew Bunn @matthew-bunn.bsky.social Father, husband, citizen, professor, focusing mainly on nuclear weapons and nuclear energy issues. Faculty lead for Harvard's Managing the Atom project: www.belfercenter.org/programs/managing-atom
My website: matthewbunn.scholars.harvard.edu
Mélanie Rosselet @melanierosselet.bsky.social French Diplomat
Fellow at the Centre Interdisciplinaire sur les Enjeux Stratégiques (CIENS) at the École Normale Supérieure de Paris
Jérémy Cartier @jeremycartier.bsky.social Pingouins, histoire et bombes atomiques
Adam Bonin @adambonin.bsky.social Philadelphia-based 91st Most Powerful Lawyer in PA (City and State PA, 2023) specializing in political law. Former pop culture blogger. Incredibly amateur birder. Author of third-place Very Best Wrong Answer LL108. Opinions are mine alone.
RAF Luton @rafluton.bsky.social The assumed Official BlueSky account of the World's most mysterious & secret (and ficticious) military base. (Parody/Satire Account)
⌬ In my MoonMoon Era ⌬ @phobosdeimos.bsky.social Mostly just random, but on occasion have been known to wax poetic/get super nerdy about: CBRN/CWMD, nuclear weapons, deterrence, etc.
Lydia Wachs @lydiawachs.bsky.social PhD Candidate @stockholm-uni.bsky.social | Previously researcher at @swp-berlin.org, @rusi.bsky.social | Alumna @kingscollegelondon.bsky.social | nuclear issues, Russia, missile defence | views=my own
Giuseppe Spatafora @gspataf95.bsky.social Analyst for transatlantic relations 🇺🇸 at @euiss.bsky.social 🇪🇺. PhD International Relations @politicsoxford.bsky.social @ox.ac.uk. Formerly at NATO Policy Planning Unit, ISF fellow 2025
Alexander Etkind @sashaetkind.bsky.social Professor of CEU in Vienna. A historian who teaches IR and the Anthropocene, but mostly thinks and comments about the current war. I am writing for the New Statesman.
Liviu Horovitz @liviuhorovitz.bsky.social Researcher @swp-intsecurity.bsky.social & leading #STAND | once @csds.bsky.social, @johnshopkinssais.bsky.social, the CSS @ethz.ch or @belfercenter.bsky.social | nukes | transatlantic stuff | qual & archives buff
Jack Womack @jwomack.bsky.social Writer.
Brady Africk @bradyafr.bsky.social Data, maps, and satellite imagery 🛰🌻🔭
viewsfromabove.bradyafrick.com
Alan @gammacounter.bsky.social Radiologist. Broadly enthusiastic. Science, outdoors/nature, travel. Lakes, coasts. Home experiments. Local environments. Many photos of slightly oddball things. Not seeking unsolicited advice.
@cltracy.bsky.social @cltracy.bsky.social Researcher at the UC Berkeley Risk and Security Lab: nuclear weapons, missiles, and the interface of science, technology, and global security.
camerontracy.github.io
Nick Kodama @nickkodama.bsky.social PhD candidate at Georgetown | Researching nukes, IR, Japan, East Asia | Also posting photos of my cat and food.
Leonid Ragozin @leonidragozin.bsky.social Nationality: journalist. Made in the BBC, now freelancer. Reporting what you need to know, not what you want to hear. Co-author of En Eiropeisk Tragedie, a book about the roots of Russo-Ukrainian conflict. Also, many Lonely Planet titles. 
National Security Archive @nsarchive.bsky.social An independent research institution that advocates for open government and uses FOIA to collect and publish declassified documents - https://nsarchive.gwu.edu - instagram.com/natsecarchive - tiktok.com/@natsecarchive
Mikhail Farhath-Kupriyanov @mikkupriyanov.bsky.social PhD student - Russia, identity, nukes and irreversibility. Associate teaching fellow & GTA @uniyorkpolitics. 1/2 Russian, 1/2 Ukrainian. he/him
Camille Grand @camillegrand.bsky.social Secretary General @asdeurope.bsky.social Previously Distinguished Policy Fellow @ecfr.eu Former senior official @NATO, Ministère des Armées, Ministère de l’Europe et des Affaires Étrangères and think tanker at FRS…
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
Carnegie Endowment @carnegieendowment.org The Global Think Tank.
carnegieendowment.org
Gregory Koblentz @gregkoblentz.bsky.social I research, teach, and write about about the causes and consequences of the proliferation of nuclear, biological, chemical, and radiological (CBRN) weapons to states and terrorists. Views are my own.
Nerdic Defence @nerdicdefence.bsky.social Following Nordic defence and security matters, mostly technical, and am myself based in the Nordics. Yes, I'm aware the pun is stupid ;). He/him.
Sangsin Lee @sslee.bsky.social Political Scientist. Ph. D.
Korea Institute for National Unification
KINU Unification Survey.
Alexander Graef @alxgraef.bsky.social Programme Lead | Russia and European Security | ELN | Security & Defence | Strategy | fmr ACONA Fellow | fmr IFSH | PhD International Affairs HSG | views mine.
Doreen Horschig @doreenhorschig.bsky.social Nukes, norms, and (counter-) proliferation ☢︎ | Fellow at Project on Nuclear Issues & @csis.org | Affiliate & PhD @ucf.bsky.social | formerly MIT, NYU, DAAD | 🇩🇪 🇺🇸
derek guy @dieworkwear.bsky.social Menswear writer. Editor at Put This On. Words at The New York Times, The Washington Post, The Financial Times, Esquire, and Mr. Porter.
If you have a style question, search:
https://dieworkwear.com/ | https://putthison.com/start-here/
Tanvi Kulkarni @kulkarnitanvi.bsky.social International Politics| National Security| Nuclear Strategy
Senior Policy Fellow, Asia-Pacific Leadership Network
Visiting Fellow, IPCS NewDelhi
+ ISYPugwash and JNU
Views = Personal
Shata Shetty @shatashetty.bsky.social Director of the Asia-Pacific Leadership Network (@apln.network)
Previously Deputy Director of the European Leadership Network.
Interested in nuclear policy, arms control, great power politics, Asian security, and emerging tech. 
John William Sutcliffe IV, Ph.D. @nuclearhistory.bsky.social Historian of France's military nuclear ambitions (1945-1958) and US nuclear weapons testing. The views expressed are my own and do not reflect the official policy or position of the US Air Force, the Department of Defense, or the US Government.
David Teter @dtc94133.bsky.social Engineering PhD. Professional Civil Engineer. Former nuclear strike advisor and intelligence analyst. Likes to chat about cars (JDM and Porsche), motorcycles, horology, and shooting film. Loves cats, hates facists.
https://github.com/davidteter/OPEN-RISOP
@hcoc-euproject.bsky.social @hcoc-euproject.bsky.social 
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
Frank Sauer @drfranksauer.bsky.social 🎙️ Co-Host @sicherheitspod.de
🤓 Head of Research @metis.unibw.de
🐦 https://twitter.com/drfranksauer/ 👈 inactive
🦣 http://mastodontech.de/@drfranksauer 👈 bridged
Tom Nichols @radiofreetom.bsky.social Staff writer at The Atlantic. Cat guy, Jeopardy champ. New Englander and curmudgeon. Speaker info: https://www.leighbureau.com/speakers/tnichols
Sergey Utkin @usv1980.bsky.social International relations
Oleg Shakirov @shakirov2036.bsky.social I study Russian foreign policy, cyber security, arms control
@vsamsondc.bsky.social @vsamsondc.bsky.social Hates the humidity, loves cats. Works on space policy for @swfoundation.bsky.social, but opinions are mine, not my organization's. She/her
@ben-reuter.bsky.social @ben-reuter.bsky.social twitter refugee
Jamie Kwong @jamiekwong.bsky.social Fellow at the Carnegie Endowment for International Peace | KCL PhD | Nukes and nonpro | RT≠endorsement
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.
Arms Control Association @armscontrolnow.bsky.social 
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
ICAN @nuclearban.bsky.social International Campaign to Abolish Nuclear Weapons. Working with governments, ICRC and the UN to end nuclear weapons. 2017 Nobel Peace Prize. #nuclearban
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
itamilradar @itamilradar.com Beyond the track
🌐 www.itamilradar.com
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
atomicbell @atomicbell.bsky.social President and CEO of the Bulletin of the Atomic Scientists
@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
Nuclear Threat Initiative @nti.org A nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging tech threats imperiling humanity.
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
James Cameron @jjjcameron.bsky.social Professor of Modern North American History at the University of Oslo, Norway. Nuclear strategy and arms control.
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
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/
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/
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
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)
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.
MeNMyRC @menmyrc.bsky.social Reserving the handle for now still on twitter.
Thomas Newdick @combatair.bsky.social Writer and editor. TWZ. Military aerospace and air warfare, mostly. Contact me: t.newdick (at) http://gmail.com. RT, like ≠ endorsement.
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.
Ryan Chan 陳家翹 @kakiuchan.bsky.social Truth is still the truth even if nobody believes it. Lie is still a lie even if everybody believes it.
Massimo Frantarelli @mrfrantarelli.bsky.social Military observer. (Mostly Ru.)
https://x.com/MrFrantarelli
Ursula Schroeder @uschroeder.bsky.social Prof Peace and Security Uni Hamburg; Director IFSH Hamburg: European peace & security, climate security, protection, democratic security
Jane Vaynman @janevaynman.bsky.social Assistant Professor of Strategic Studies at Johns Hopkins SAIS. I study arms control, nuclear weapons, international institutions, and emerging technology.
Etienne Marcuz @m514ever.bsky.social 🇫🇷 analyst following strategic systems and technologies ☢️🚀🛰
My views and my mistakes are my own. Always happy to learn and share 📖
Member of Réseau Nucléaire & Stratégie - Nouvelle Génération (RNS-NG)
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
Dara Massicot @massdara.bsky.social Senior Fellow, Carnegie Endowment for International Peace, Russia and Eurasia Program. I cover military issues in Russia and Eurasia. 
Michael Horowitz @michaelhorowitz.bsky.social Geopolitical and security analyst, Views are my own.
Flightradar24 @flightradar24.com The world’s most trusted flight tracker.
Bosphorus Observer @yoruk.bsky.social Obsessive ship-spotting by the Bosphorus -.-. .-. .. -- . .- / .. ... / ..- -.- .-. .- .. -. . 50501
Steffan Watkins 🇨🇦 @steffanwatkins.bsky.social I'm a writer and research consultant specializing in tracking ships and planes using publicly available information.
https://www.patreon.com/SteffanWatkins
MT Anderson @mtanderson.bsky.social 🇺🇸 husband, girl dad, son, brother 🇺🇸
••• Opinions are my own •••
Dave Kearn @davekearnjr.bsky.social Son, brother, uncle. Teacher, retired bartender, (slowly) improving golfer. RIP E.B.
“It’s a fragile thing, this life we lead…”
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
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
United Nations Institute for Disarmament Research @unidir.org Building a more secure world • Director Robin Geiss
Petr Topychkanov @ptopych.bsky.social Regional studies, specifically in South Asia, and nuclear topics such as arms control and deterrence (both research and teaching in these areas). Previously CEIP, SIPRI, now IMEMO, MSU
Krakek @krakek.bsky.social a Quasi-NEET interested in all things military.
Current focus on all things nuclear.
Random Restaurant Bot @restaurant-bot.bsky.social Random Restaurant bot on Bluesky using code created by @friendo.bsky.social, bot engineered by Turbo Dong 420
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.
Micah @rincewind.run Recovering forum poster, politics doomer, basketball nerd. I write code for a living. He/him. Views entirely my own.
Deputy Chair of the Ankh-Morpork Posters’ Guild
🏳️⚧️ rights are human rights
Dr. Taylor Loy @tayloraloy.bsky.social Virginia Tech Postdoc (STS), nuclear energy/nonpro. Former SRO instructor nuke worker. he/him.
https://tritiummatters.org
Diss:
https://hdl.handle.net/10919/120638
Day One:
https://fas.org/publication/fusion-energy-leadership-tritium-capacity/
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⚛
Juuso Liekkilä @juuso.bsky.social Space officer @FinnishAirForce. General Staff Officer student & doctoral researcher @FinNDU. Writing mostly about military use of space. Private blueskyer.
Adam Rawnsley @arawnsley.bsky.social Dog shepherd.
Elizabeth Tasker @elizabethtasker.bsky.social UK astrophysicist and science communicator working at the Japan Aerospace Exploration Agency (JAXA). Author of 'The Planet Factory' and editor of ‘Planetary Diversity’. Very into space, virtual reality, computer graphics and rescue cats.
Almudena Azcárate Ortega @almuazcarate.bsky.social Space Law Lead at Secure World Foundation ✨ | Fellow at UNIDIR 🇺🇳 | Doctor in Space Law 🚀 | Academic Fellow at Georgetown Center on National Security 🛰 | Opinions are my own
Blake Herzinger @bdherzinger.bsky.social I like big navies and I cannot lie. Navy Reservist | CIMSEC | Asian Security | ex-Citi, AEI, USSC, Twitter, Pacific Forum, US Pacific Fleet | Proud Idahoan | Opinions mine, but you're welcome to adopt them
BeijingPalmer @beijingpalmer.bsky.social Deputy editor at Foreign Policy, China nerd, gaming nerd, reads a lot. Never again a country without consequences.
Naval News @navalnews.com navalnews.com is updated daily with in-depth features, industry and naval forces news round-ups, event coverage, video reports and more.
Bruno Tertrais @brunotertrais.bsky.social Deputy Director, Fondation pour la recherche stratégique.
Non-Resident Fellow, Institut Montaigne.
Geopolitics, strategy and stuff.
Personal account.
b.tertrais@frstrategie.org
Books: tinyurl.com/bdzbxnyx