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León Castellanos-Jankiewicz

@leoncastjan.bsky.social
724 followers 78 following 226 posts

international law and arms trade. working on the b sides leoncastellanos.com

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 1h
"To reduce hostility in public spaces and increase the chances of constructive conversations, it is not only sufficient but also most effective to simply express your own opinion. For example: “I agree with that.” Or: “I have a different opinion on that.”" csh.ac.at/news/how-to-...
csh.ac.at
How To Respond To Hate Without Fueling It
Following three elections in Germany in September, much has been said about increasing political polarization and divisions within society. CSH's Mirta Galesic...
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 30/09/2026
"As a historian, Ginzburg is best known as a pioneer of microhistory, a movement that came to prominence in Italy in the 1970s that focused on individual events, locations, or people, often those on the margins of society." thebaffler.com/latest/carlo...
thebaffler.com
Carlo Ginzburg, 1939–2026 | Emma Claire Foley
Carlo Ginzburg’s work centered and subverted the very idea of insignificance.
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Samuel Moyn @samuelmoyn.bsky.social · 29/09/2026
Mark Lilla’s preface to the new edition of Judith Shklar’s “The Liberalism of Fear” www.nybooks.com/online/2026/...
nybooks.com
From Fear Set Free | Mark Lilla
Humankind cannot bear very much uncertainty; to our dying day, we are all afraid of the dark. And so we perceive the world selectively, exaggerating the
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Dinosaur Comics! @qwantz.com · 29/09/2026
if you believe in yourself you can work within the existing constraints imposed upon you to, in some cases, accomplish a subset of your dreams www.qwantz.com/index.php?co...
Off panel: If you believe in yourself, you can do anything!
T-Rex: ...I can?

T-Rex: I CAN?!?T-Rex: Okay Dromiceiomimus, I believe in myself, utterly and completely, and what I want to do with that belief is get boats for hands so I can walk around and say "wow, these boats sure are handy".
T-Rex: HAND-y, Dromiceiomimus.
Dromiceiomimus: I got it, yeah. I guess we COULD make some boat-shaped gloves that -
T-Rex: NO! They have to be REAL.Utahraptor: You want to cut off your hands and replace them with ACTUAL full-sized boats?
T-Rex: I believe in myself!

T-Rex: BUT: they still have to work as hands too. They must be actual boats that are also flesh and allow me sensation.
Utahraptor: How about this: if you believe in yourself, you can do SOME things, not all things. Perhaps not even MOST things.Off panel: But you can do approximately as many things - and perhaps even slightly more - than you could if you DIDN'T believe in yourself.
T-Rex: Okay you know what that's actually WAY more reasonable
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Vauhini Vara @vauhinivara.bsky.social · 29/09/2026
Here's a gift link to the article, where you can learn more.
bloomberg.com
How Chatbots and AI Are Already Transforming Kids’ Classrooms
Educators across the country are bringing chatbots into their lesson plans. Will it help kids learn or is it just another doomed ed-tech fad?
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29/09/2026
China was an international law scholar once upon a time and his PhD-based monograph is still epic www.theguardian.com/books/2026/s...
theguardian.com
The Rouse by China Miéville review – a mighty achievement from the ‘new weird’ author
Twenty years in the writing, this paranormal epic of cold war espionage and family tragedy is a quantum leap in terms of ambition and moral seriousness
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29/09/2026
"Economics has spent the last three decades celebrating what it calls a credibility revolution...The discipline now prides itself on answering questions with facts and evidence, rather than theory and assumptions." www.project-syndicate.org/commentary/e...
project-syndicate.org
The Dismally Obedient Science
Carolina Alves warns that empirical research in economics is displacing investigation of underlying causes.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29/09/2026
This week's long read: “It was end times for the postliberals in Budapest, even if they didn’t know it yet.” www.thedriftmag.com/the-last-day...
thedriftmag.com
The Last Days of the Danube Institute | A Report from Postliberal Budapest
By Brian Goodman. In the wake of Viktor Orbán’s defeat, Budapest’s postliberals face end times.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 27/09/2026
"Where are, after all, in mainstream discussions of justice and reparation – which, Liu would argue, focus myopically on identity politics – the acknowledgements of the 2008 financial crisis?" artreview.com/traumatized-...
artreview.com
What is Catherine Liu’s Problem with ‘Trauma Culture’?
Can a concept of trauma be returned to the working class, the abused and the exploited? Is it too late? Does anyone even care anymore?
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 26/09/2026
The guru of goodness indeed: www.youtube.com/watch?v=wGWC...
youtube.com
George Saunders Says Breaking These 3 Delusions Can Save You | The Interview
YouTube video by The Interview
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 25/09/2026
Accelerationist ed: "The storied venture-capital firm is investing $35 million in an unaccredited San Francisco-based two-year alternative to traditional college for students ages 16 to 22." www.wsj.com/us-news/educ...
wsj.com
Exclusive | The Tech Elite Is Funding an Alternative to College
The venture-capital firm is spending $35 million to back the two-year academy, with other Bay Area tech giants on board.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 21/09/2026
Join us in Brussels tomorrow! www.reconstitution.eu/en/news/news...
reconstitution.eu
European Rule of Law Talks 2026
1-Day Conference in collaboration with the European Policy Centre in Brussels on 22 Sept 2026
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 20/09/2026
Struck by how this report openly acknowledges root causes like tick-the-box learning models that sapped critical student engagement before AI came along: aiandeducation.mit.edu
aiandeducation.mit.edu
AI and Education – Report of MIT’s Ad Hoc Committee on AI Use in Teaching, Learning, and Research Training
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 19/09/2026
"arms control has inadvertently neglected uncertainty management—the ability to acclimate to the unknown." www.sup.org/books/politi...
sup.org
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 17/09/2026
"Normally, capital owners can live quite contentedly – indeed, very contentedly – with government debt." newleftreview.org/sidecar/post...
newleftreview.org
Wolfgang Streeck, Who Will Pay — Sidecar
Fiscal crisis and firewalls.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 14/09/2026
Great listen on the crisis on the left & the limits of utopian thinking: open.spotify.com/episode/3UNM...
open.spotify.com
Dipesh Chakrabarty on the Second Decline of the West
Future Histories International · Episode
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Noema Magazine @noemamag.com · 12/09/2026
“Will AI transform science? Certainly. Will it replace scientists? Certainly not.” — @saraimari.bsky.social www.noemamag.com/the-death-of...
noemamag.com
The Death Of The Scientist | NOEMA
Will AI kill science, or will it foster a scientific revolution? The answer depends on something no one knows: What is science?
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 12/09/2026
New Grégoire Chamayou on the data centre cooling crisis : "such crises recur whenever the drive to expand technical capacity generates, at some threshold, the thermal conditions of its own arrest" www.radicalphilosophy.com/article/ther...
radicalphilosophy.com
Gregoire Chamayou · Thermal contradictions of electronic capital: The second Jevons paradox and the prehistories of the Data Centre Cooling Crisis (2026)
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Asser Institute @tmcasser.bsky.social · 10/09/2026
❓What is waiting for you at our upcoming #training on #disarmament and non-proliferation of #WMD? Hear our expert's perspective on how this landscape has evolved and how this training equips you with practical knowledge to stay ahead of the curve. 🔗 Register today: bit.ly/4vDuZ7f #armscontrol
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 10/09/2026
Framing AI as the fix for peer review gets it backwards. The crisis is structural — more papers, fewer paid reviewers, and a system that runs on trust that AI can't replicate. Automating review doesn't solve that. www.science.org/content/arti...
science.org
Can AI help solve the peer-review crisis? Here are its promises and pitfalls
Amid a shortage of human reviewers, tests indicate AI can assist—but is not a savior
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 09/09/2026
Bedtime reading: superdark.antikythera.org
superdark.antikythera.org
The Superdark Factory | Antikythera
Imagine the most extreme possible factory that drives itself, determines its own objectives and optimizes itself to accomplish them. What would it mean to steer or govern such a thing?
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 09/09/2026
Populating my Xmas wishlist: "Boyagoda doesn’t pull any punches in his university satire, nor does he fully dismiss the university system and experience." www.wordonfire.org/articles/fla...
wordonfire.org
Flatness and Shine: ‘Lords of Serendipity’ and the Modern University - Word on Fire
In "Lords of Serendipity," Boyagoda doesn’t pull any punches in his university satire, nor does he dismiss its system and experience.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 05/09/2026
What would scientific production look like under communism? geesemag.com/articles/gen...
geesemag.com
Genome Scans in the Morning: Envisioning a Free Association of the Producers of Science — geese magazine
Reforming science under capitalism has run its course. Nabi Eullmann argues for a free association of science producers, answerable to all of society.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 15/05/2026
Off-kilter analogy but no less chilling: “Autonomous weapons are the new nuclear weapons. Countries that possess them will be protected.” www.nytimes.com/2026/05/15/w...
nytimes.com
Enter the Killer Robots: The Ukrainian Forging the Future of Warfare
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Watson School at Brown @watsonschoolbrown.bsky.social · 14/05/2026
New Trending Globally #podcast: How do borders shape our society? Ieva Jusionyte, director of Brown’s Center for Human Rights and Humanitarian Studies, discusses immigration enforcement, border communities, and her award-winning research. ow.ly/Tzin50YZAml
ow.ly
Border politics at our doorstep with Ieva Jusionyte
Quickly and easily listen to Trending Globally: Politics and Policy for free!
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 14/05/2026
Stuart Kauffman on "new-in-the-universe possibilities": "Humility then becomes rational rather than moralistic. Humility in this frame is not a virtue-signaling posture. It becomes epistemically and ontologically appropriate." via @noemamag.com www.noemamag.com/emergence-is...
noemamag.com
Emergence Is Not Engineering | NOEMA
The universe creatively sets the rules for its own becoming.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 13/05/2026
"The groups also accused the European Commission of prioritising defence industry interests over transparency and democratic scrutiny, warning that the omnibus package risks accelerating global arms sales under the cover of technical reform." www.euractiv.com/news/ngos-wa...
euractiv.com
NGOs warn EU defence overhaul could weaken arms export controls | Euractiv
Campaigners say reforms would reduce transparency over military transfers
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 11/05/2026
Nice running into @lyndseystonebri.bsky.social today
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 11/05/2026
Undermining EU coordination, some "rich" Member States are breaking ranks to avoid co-financing defense spending of EU nations that have lower credit ratings nltimes.nl/2026/03/17/n...
nltimes.nl
Netherlands, UK, Finland plan multilateral defense fund to boost European rearmament
The Netherlands, the UK, and Finland plan to create a new financing body for defense initiatives. The Multilateral Defense Mechanism (MDM), open to nations with strong credit standings, aims to stimul...
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 07/05/2026
Late to this - worth reading if you haven't: turinsche.substack.com/p/issue-43-h...
turinsche.substack.com
Issue 43: Human Rights for the Arms Trade
Why HRDD Matters in Venture-Backed Defense & Dual-Use Startups.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 07/05/2026
Europe, slouching towards the democratization of war cepa.org/article/how-...
cepa.org
How Private Capital Can Accelerate European Rearmament
Europe’s defense industry supply chains are technology dependent and lack surge capacity. Private capital can help if legislators act.
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 26/03/2026
🎬 Great to see this out! It was a pleasure to join leading experts and practitioners to discuss EU defence procurement. My bottom line: EU procurement fragmentation comes at high costs, and impacts accountability, human rights & the rule of law.
youtube.com
EIPA in Conversation With - European Defence Procurement in a Changing Geopolitical Landscape
YouTube video by European Institute of Public Administration - EIPA
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 21/03/2026
Our new co-edited symposium on 'Business and Human Rights and the arms industry: challenges, prospects, and current dynamics' is published in the Business and Human Rights Journal ! Here is our Editorial: www.cambridge.org/core/journal...
cambridge.org
Corporate Accountability in the Arms Sector: Possibilities, Limits, and Visions of Justice | Business and Human Rights Journal | Cambridge Core
Corporate Accountability in the Arms Sector: Possibilities, Limits, and Visions of Justice - Volume 11 Issue 1
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 16/03/2026
"The talk of ‘our values’ that has now become commonplace contributes to the devaluation of rationally justified principles." granta.com/europes-mist...
granta.com
Europe’s Mistake
‘I’ve never accepted the conception of political realism, which can be traced back to Carl Schmitt and Hans Morgenthau, that justice between nations is impossible.’
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The Syllabus @the-syllabus.bsky.social · 15/03/2026
The killing of CJNG leader “El Mencho” unleashed chaos across Mexico—but not all of it was real. This piece details how the cartel used a mix of real violence and AI-fueled disinformation to amplify terror nationwide. By @evodzoni.bsky.social & @liliasaul.bsky.social in @occrp.org buff.ly/PnynJIs
occrp.org
Fear is the Message: How the Jalisco New Generation Cartel Weaponized Algorithms to Paralyze Mexico
In the hours after Mexican drug lord "El Mencho’s" killing by the military, his Jalisco New Generation Cartel responded by deploying hundreds of roadblocks, torching banks and supermarkets — and…
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 15/03/2026
Great episode on agency, post-humanism and tech: open.spotify.com/episode/72nt...
open.spotify.com
Spotify – Web Player
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 11/03/2026
New publication! Delighted to share my chapter on corporate accountability for wrongful arms transfers forthcoming in The Cambridge Handbook on Litigating Business and Human Rights Violations edited by H. Ahmad, E. Aristova and R. Chambers: papers.ssrn.com/sol3/papers....
papers.ssrn.com
Corporate Accountability for Wrongful Arms Transfers
This paper examines legal accountability mechanisms available to victims of harm caused by wrongful arms transfers, analysing the interplay between state respon
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 06/03/2026
Worrisome to say the least euobserver.com/203546/how-t...
euobserver.com
How the EU is deregulating arms-control to be like any other industry
A new legislative package — the Defence Readiness Omnibus — threatens to overhaul how weapons are produced and sold, creating a dangerous precedent for global security. By doing so, the EU is effecti...
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Dinosaur Comics! @qwantz.com · 02/03/2026
that's a big oopsie-doopsie on my part, and i apologize qwantz.com/index.php?co...
T-Rex: We divide up the oceans into different oceans, but c'mon - it's all the same ocean!

T-Rex: *GASP*
T-Rex: Wait, this applies to everything!T-Rex: We divide up the planet into different countries, but it's all the same planet! And we divide us all up into these groups, but WE'RE ALL THE SAME SPECIES!
Dromiceiomimus: I'm not.
T-Rex: Okay, fine, we're all the same CLADE! A clade, of course, being a monophyletic group of organisms sharing the same common ancestor.
Dromiceiomimus: Of course!
Utahraptor: But pterosaurs aren't dinosaurs, so they're not part of the same clade as us.
T-Rex: EUGH!

T-Rex: Utahraptor, I am TRYING to achieve some sort of ENLIGHTENMENT here, and instead I'm being bogged down in CLADE DEFINITIONS. How about this: we're all LIFE, so we're all in this together. Ruin that!!
Utahraptor: This would be much more compelling if I didn't have to devour other forms of life to maintain my own.
T-Rex: Ah, I see the trouble here. I said "ruin that!!" when I should've said "please leave me in ignorance, it's very important for my mental health right now."
T-Rex: My mistake!!
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 21/02/2026
I write today for @euractiv.com about how contradictory national rearmament policies in Europe are playing into Russia's hands:
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 09/02/2026
Excellent opportunity for anyone wishing to engage with a vibrant and supportive community in the arms trade space :
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Forum on the Arms Trade @forumarmstrade.bsky.social · 07/02/2026
Yesterday's Trump executive order establishes an "America First Arms Transfer Strategy"... which appears to replace the Conventional Arms Transfer Policy. See updated resource www.forumarmstrade.org/catpolicy.html EO - www.whitehouse.gov/presidential... factsheet - www.whitehouse.gov/fact-sheets/...
forumarmstrade.org
US Conventional Arms Transfer Policy
Resources and expert assessment of US Conventional Arms Transfers (CAT) Policy
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 06/02/2026
New publication: Happy to see our @asilorg.bsky.social Closing Plenary "Can Arms Trade Bring About Peace?" in the Proceedings of the American Society of International Law 2025 Annual Meeting. Thank you to the panelists for their insightful remarks. Full text: www.cambridge.org/core/journal...
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 03/02/2026
New START sunsets in 2 days: www.nytimes.com/2026/01/30/o...
nytimes.com
Opinion | Let the Arms Race Begin
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29/01/2026
The Progressive Post - Does peace still have a chance? feps-europe.eu/wp-content/u...
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Oded Rechavi @odedrechavi.bsky.social · 28/01/2026
The way to accelerate science is to SLOW it down. Fewer papers please! We’re drowning in meaningless text. One GREAT paper per lab per decade is more than enough. q.e.d 👇
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Small Arms Survey @smallarmssurvey.bsky.social · 29/01/2026
Ammunition remains the most traded small arms category worldwide, accounting for 35% of the value of reported global imports for the period 2019–24. Read more in this Situation Update from 2025, part of a collaborative project supported by SNIS: www.smallarmssurvey.org/resource/aut...
smallarmssurvey.org
The Authorized Trade in Small Arms: Latin America from a Global Perspective
Situation Update: Latin AmericaBased on UN Comtrade data, reported global small arms and light weapons (hereafter ‘small arms’) exports rose sharply from USD 5 billion in 2019 to USD 9.2 billion in 20...
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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 28/01/2026
Two postdoctoral researcher roles at the University of Sussex for a project on "Technology and the (future) Human in War": jobs.sussex.ac.uk/job/36e1adc2...
jobs.sussex.ac.uk
Postdoctoral Research Fellow – Technology and the (future) Human in War x2 Ref: 43027 & 43028 (Fixed Term) - Job page - University of Sussex Job Search
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Forum on the Arms Trade @forumarmstrade.bsky.social · 19/01/2026
"European Rearmament and U.S. Weapons Reliance" by León Castellanos-Jankiewicz, Senior Researcher, Asser Institute for International and European Law in The Hague @leoncastjan.bsky.social #TrumpAtOneYear www.forumarmstrade.org/trump_yearon...
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george 💿 @deejaygeejaygee.bsky.social · 16/01/2026
one year since David Lynch passed, happy friday and RIP big dawg
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