Erin Petrey @erinpetrey.bsky.social 🇬🇧 On hiatus until October
🇺🇸Former Candidate KY-06, Progressive Democrat, Proud Kentuckian
💚Founder, Demanding Data Center Accountability (demanddca.org)
Substack: https://bit.ly/3Kn7yNC
Gerald C Brown @geraldcbrown.bsky.social China, PLA, Taiwan, defense, & nukes | IAF @CFR.org | Liberal natsec-type | Opinions mine
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
Institute for Security and Technology @istorg.bsky.social We are the 501(c)(3) critical action think tank that unites technology and policy leaders to create solutions to emerging security challenges.
https://securityandtechnology.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
Nuclear Threat Initiative @nti.org A nonprofit, nonpartisan global security organization focused on reducing nuclear, biological, and emerging tech threats imperiling humanity.
Centre for Statecraft & National Security @csns-uk.bsky.social Research centre based within @warstudieskcl.bsky.social @kingscollegelondon.bsky.social. Formerly International Centre for the Study of Radicalisation (ICSR) & Centre for Grand Strategy (CGS). RTs ≠ endorsements.
FSI Stanford @fsi.stanford.edu The Freeman Spogli Institute for International Studies is Stanford's hub for nonpartisan, interdisciplinary research, teaching, and policy impact in international affairs.
Victor Cha @victordcha.bsky.social Georgetown Professor, author, former USG, CSIS Geopolitics President, long-suffering Giants and hopeful Knicks aficionado.
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
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
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.
Human Rights Watch @hrw.org 🔎 🌎 ✊
Exposing human rights abuses around the world.
BWJ (he/him) @bwjhimself.bsky.social Writer, actor, professional Creep. Always trying to do better, whether that means listening quietly or taking action. Also tired all the time and fundamentally lazy, so.
Jascha Kaykas-Wolff @kaykaswj.bsky.social Professional commuter, CEO @visitingmedia ex: @Mozilla CMO @bittorrent @microsoft dad of 3
Chase @chalexthegreat.bsky.social Nuclear weapons policy wonk. Opinions my own.
SOMA
RTs≠endorsements. he/him/his
Myneni @mynenihari89.bsky.social My thoughts about my weapons
Joshua @desafinado.mastodon.social.ap.brid.gy The world stands on three pillars. 📙+ ☕️ + 🐈
🌉 bridged from ⁂ https://mastodon.social/@desafinado, follow @ap.brid.gy to interact
Laura Rozen @lkrozen.bsky.social Reporting on foreign policy. Current: https://diplomatic.substack.com Just Security ed board. Al Monitor, Politico, Foreign Policy alum.
Ivo Daalder @ivodaalder.bsky.social Former US Amb @NATO. Now Senior Fellow @BelferCenter. Host World Review Podcast. Author America Abroad Substack. Policy Wonk. Dog lover. Baseball fan. New Chicagoan. Old Dutchman.
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- M Mark Hibbs @mark88.bsky.social Non-Resident Senior Fellow, Nuclear Policy Program, Carnegie Endowment for International Peace. They are in Washington, D.C. I'm in Berlin.
Ewen MacAskill @ewenmac3.bsky.social I have been a journalist for half a century. Much of that was on The Guardian where I covered mainly politics in the UK and US, international relations, conflict and spies.
Andrew Exum @exum.bsky.social 
Carl Robichaud @carlrobi.bsky.social Program Officer on nuclear policy at Longview Philanthropy (http://longview.org). Opinions are my own.
David Brooks @dgbrooks.bsky.social Image maker and editor. Grateful, curious, iconoclastic, abundantly imperfect, and in love with the natural world.
Mark Ames @markames.bsky.social Radio War Nerd patreon.com/radiowarnerd
Jonathan Haidt @jonathanhaidt.bsky.social Social psychologist at NYU-Stern, working to roll back the phone-based childhood. Please visit anxiousgeneration.com & afterbabel.com 
Patrick Johnston 🇨🇦 🇺🇦 @risingaction.bsky.social Sports guy. Some yelling about other things too.
I had a blue check once, but Elon took it away.
@loveyourcake.bsky.social tolerates my snoring
Chris Blattman @chrisblattman.bsky.social Economist, political scientist & writer @UChicago @HarrisPolicy. See my book Why We Fight: http://penguinrandomhouse.com/books/636263
Chris Derrick @cderrickran.bsky.social Used to run.
colin clark @profcolinclark.bsky.social associate dean (r&i)+ prof of sociology & social policy @ UWS. interested in mobility, borders, identity, roma rights. fond of vinyl, cassettes, coffee, cats, swimming, autumn. glasgow.📍
Samantha Power @samwisepower.bsky.social I am not *that* Samantha Power. I am a former journalist and now communications professional interested in books, sci-fi, writing, and outdoor adventures. 
Matthew Levitt @mattlevitt.bsky.social Director, Reinhard Program on Counterterrorism & Intelligence at The Washington Institute for Near East Policy; Adjunct Professor, Georgetown University; Adjunct Professor, Pepperdine University
Alan Eyre @alaneyre.bsky.social Former US foreign policy senior official (Iran/MENA /energy); now focused on foreign policy in the Anthropocene.
James Patton Rogers @jamespattonrogers.bsky.social Executive Director of the Cornell Brooks Tech Policy Institute at Cornell University. War Historian, Author, Policy Advisor, & Broadcaster. I work on the history of drones, precision weapons, and the future of autonomous warfare. www.jamespattonrogers.com
James Reggio @james.reggio.cat 💅 Personal account
🐱 Mostly cats, occasionally selfies 💪
🐈 🦆 🇺🇸 🍣 ⛷️ 🛫 🏍️ enthusiast
🏳️🌈 👬 @chestonlee.com
🐦 x.com/jamesreggio
Matthew Harries @matthewharries.bsky.social Research director at the Labour Movement for Europe. Previously director of nuclear policy at RUSI, managing editor of Survival/senior fellow at IISS, and specialist for the Foreign Affairs Committee.
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/
Ken Dilanian @kendilanian-nbc.bsky.social Justice and Intelligence Correspondent, NBC News. Reach me at DilanianNBC@proton.me
Michael Peck @michaelpeck.bsky.social Defense writer and analyst. Editor of Uncommon Defense: www.theuncommondefense.com. Email: mikedefense1@gmail.com
Linda Blackford @lblackford.bsky.social Editor, Kentucky Lantern
Glengarry Glen Ross Johnston @stillweavens.bsky.social WillStevensNYC and stillweavens on the bird app.
NYC . I/O Psychology . Funk .
Mets . Islanders . Knicks . Bills . Portsmouth FC . FC St. Pauli . Barça
CSIS Europe, Russia, and Eurasia Program @erep.csis.org The CSIS Europe, Russia, and Eurasia Program produces forward-looking analyses on transatlantic relations & political developments across Europe, Russia, & Eurasia.
Open Society Foundations @open-society.bsky.social We work to build vibrant and inclusive democracies whose governments are accountable to their people.
Our website: https://osf.to
Community guidelines: http://osf.to/CG
Joe Gerth @jgerth.bsky.social Journalist. Truth teller. Kentuckian.
Paul Staniland @pstaniland.bsky.social UChicago political scientist, amateur bee photographer, Carnegie South Asia nonresident scholar, despairing Bulls fan, public school parent, etc. http://www.paulstaniland.com
Jeff Colgan @jeffcolgan.bsky.social Professor of International Relations and Political Science. Interests: international order, energy, climate change, historical IR 
Christopher Clary @claryc.bsky.social Assistant Professor of Political Science, University at Albany; Nonresident Fellow, Stimson Center
Jen Psaki @jenpsaki.bsky.social Mom of 2, Host of @briefingwithpsaki.bsky.social Tuesday-Friday at 9pm ET on MS NOW.
Alberto Fittarelli @fittarelli.com Sr. Researcher @citizenlab.ca, Disinformation & Harassment. Fmr. Meta. Trainer: find & expose covert influence. I like doers. Opinions my own.
Ali Crawford @alicrawford.bsky.social Researcher @ CSETGeorgetown.bsky.social | Cyber Education & Workforce Development | Prize Competitions & Policy
CSIS Project on Nuclear Issues @poni.csis.org @csis.org’s Project on Nuclear Issues (PONI) hopes to sustain a community of next generation nuclear experts & generate new ideas & debate on nuclear issues. Repost ≠ Endorsement
The Strategy Bridge @thestrategybridge.bsky.social Official account for The Bridge, an org focused on the development of people in #Strategy, #NationalSecurity, & #MilitaryAffairs. Publishing & funding leaders. https://thestrategybridge.org/ 
Rosa Brooks @rosabrooks.bsky.social Writer, law prof at Georgetown, Democracy Futures Project
www.rosa-brooks.com
Van Jackson @vanjackson.bsky.social The class politics of geopolitics. Newsletter, http://Un-Diplomatic.com. Co-host, https://www.BangBangPod.com; https://www.undiplomaticpodcast.com. 🇺🇸🇵🇭🇳🇿. https://www.vanjackson.org
Ryan Evans @ryanevans.bsky.social Founder, War on the Rocks (warontherocks.com) and Bedrock Knowledge (thebedrock.co). Opinions are my own. I'm not a journalist so please don't mistake me for one.
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
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.
Fiona Cunningham @fiona-cunningham.bsky.social Assistant Professor of Political Science at the University of Pennsylvania. Author of “Under the Nuclear Shadow” (Princeton, 2025). China, nukes, cyber, space, international security. She/her. Personal website: www.fionascunningham.com
38 North @38north.org Informed analysis of events in and around the DPRK. A publication of the Stimson Center. Innovative Ideas Changing the World.
Lawyers, Guns and Money @lawgunsmoney.bsky.social The Last of the Old School Blogs
Mannfred Nyttingnes @mannfred.bsky.social Passionate about human rights, liberal democracy, freedom of press & freedom of speech. Pro-EU. Oslo, Norway/Noreg
Katy Hayward @katyhayward.bsky.social As it turns out, a Professor of Political Sociology at Queen's University Belfast working in & on the island of Ireland.
Own my own views.
http://go.qub.ac.uk/hayward 
Lad Decker @laddecker.bsky.social Artist. Painter. Intellectual punk. Human conflict, social identity and power. Gritty. Slow burn. Social commentary. Based Seattle & US West Coast. LadDecker.com
Outrider Foundation @outrider.org We support multimedia storytelling about nuclear threats and climate change 🌎 Read our newsletter: https://outrider.org/newsletter
Anne Pellegrino @annepellegrino.bsky.social Media programs at Planet 🛰️
Lover of satellite imagery and admirer of digital investigations
Michael Kofman @michaelkofman.bsky.social Senior Fellow, Carnegie Endowment. Defense analysis with a focus on the Russian and Ukrainian militaries.
Ellen Nakashima @ellenwapo.bsky.social Intelligence and national security reporter at The Washington Post. Reach me securely on Signal at Ellen.626.- K Dmitry Kovchegin @kovchegin.bsky.social
Krakek @krakek.bsky.social a Quasi-NEET interested in all things military.
Current focus on all things nuclear.
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)
Tim Wright @timwrightleeds.bsky.social Prof of Satellite Geodesy, School of Earth and Env, Univ Leeds; Director of NERC_COMET; Co-founder of SatSenseLtd; @timwright_leeds on another site; Fringes, Quakes and some other stuff. All views my own. 
Sergey Radchenko @radchenko.bsky.social Historian of the Cold War and after. Wilson E. Schmidt Distinguished Professor, Henry A. Kissinger Center for Global Affairs, Johns Hopkins School for Advanced International Studies. The author of “To Run the World.”
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.
Sarah Rainsford @sarahrainsfordbbc.bsky.social BBC Eastern Europe correspondent. Expelled from Moscow. Now in Warsaw. In Ukraine when I can. My book on all that & more is "Goodbye to Russia" (online & in good book shops). I may also be a little bit obsessed with a certain spaniel
Seva @seva.bsky.social book: http://amzn.to/2oRD2yG. substack: https://hegemon.substack.com/
Bill Potter @billpotter.bsky.social PR, Communications, Marketing pro. Bring on the sports trivia. Willing to plan golf trips. Boston College alum with stops at VCU Comprehensive Cancer Center, First Tee - Greater Richmond, CAA, American Athletic Conference, Horizon League, and IUPUI.
Josh Rogin @joshrogin.bsky.social Lead Global Security Analyst at Washington Post Intelligence
Author of Chaos Under Heaven
On Substack at thecable.news
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.
Joby Warrick @jobywarrick.bsky.social Veteran Washington Post national security reporter, 1996-2025. Author, "The Jackal." Previous books: Triple Agent," "Black Flags: The Rise of ISIS," "Red Line."
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.”
Foreign Policy @foreignpolicy.com The magazine for global politics, economics, and ideas.
https://foreignpolicy.com/
Taylor Fravel @fravel.bsky.social Studying China's foreign and security policies and director of MIT's Security Studies Program
David Guttenfelder @dguttenfelder.bsky.social Photojournalist
John Hudson @johnhudson.bsky.social Professor of Social Policy and Academic Director of The York Policy Engine at the University of York, UK.
Social security, the politics of social policy, attitudes to welfare, devolution
Nukes of Hazard @nukesofhazard.bsky.social Center for Arms Control and Non-Proliferation. Working to limit & eventually eliminate the nuclear threat through Congressional & public outreach.
https://armscontrolcenter.org/
Spencer Ackerman @attackerman.bsky.social Journalist & author of REIGN OF TERROR, contributor to Zeteo. New comic book series: NO ONE ESCAPES THE DIALECTIC, from Boom! Studios. Subscribe to FOREVER WARS for ‘natsec’ journalism: https://www.forever-wars.com
Signal: attackerman.81
Pavel Podvig @russianforces.org Russian nuclear forces, nuclear arms control, disarmament, verification. Strictly personal views here.
All coordinates are at http://russianforces.org/podvig
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
Ward Hayes Wilson @wardhayeswilson.bsky.social Realist working to eliminate nuclear weapons. (Not an IR “Realist,” just, you know, an everyday realist.)
@icanuk.bsky.social @icanuk.bsky.social 
Glen Hiemstra, Futurist @glenhiemstra.bsky.social Retired founder futurist.com/futurist-think…, former professor, Futurist Think Tank member. Focused on now & on advocating for very long-term preferred futures, 1000 years plus. Interests include Space-energy-tech-AI-arts-politics-sports-nature.
BASIC | The British American Security Information Council @basicint.bsky.social We work to safeguard humanity and Earth's ecosystem from nuclear risks and interconnected security threats, for generations to come.
Daniel A. Pinkston, Ph.D. @dpinkston.bsky.social KCPC expert advisor, IR scholar, Yonsei University, Troy University, NE Asian security and political economy, WMD nonproliferation. USAF veteran and VFW member. Former state powerlifting champion and casual judo player. Cat man and life-long Laker fan.
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
IAEA - International Atomic Energy Agency @iaeaorg.bsky.social Official account of the International Atomic Energy Agency (IAEA), the 🌍's centre for cooperation in the nuclear field, promoting the safe, secure and peaceful use of nuclear technology.