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León Castellanos-Jankiewicz

@leoncastjan.bsky.social

700 followers 65 following 160 posts

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

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · Dec 16

Our symposium 'New Pathways Toward Supply Chain Accountability' is now published in @ajil.bsky.social! I thank my co-editors Tibisay Morgandi and Sergio Puig for our excellent collaboration and the authors for their thought-provoking contributions: www.cambridge.org/core/journal...

New Pathways Toward Supply Chain Accountability

Welcome to Cambridge Core

www.cambridge.org

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 2d

A great and generous teacher - RIP

IWM Vienna @iwm.at · 2d

We mourn the loss of Claus Offe, a luminous scholar, generous friend, and cherished member of the IWM community: www.iwm.at/news/claus-o...

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 3d

Germany recently exported "other military goods" to Israel worth 2.46 million euros in shipments occurring between September 13 and 22. This follows Germany's suspension of arms exports that "could be used in Gaza" announced by Mertz on 8 August: www.haaretz.com/israel-news/...

Germany approves 2.46 million euros in arms exports to Israel after partial Gaza embargo

In the First Five Weeks After the Suspension, No Export Approvals Were Granted. Current Approvals, Up to September 22, Show 2.46 Million Euros in Shipments Occurred Between September 13 and 22, Though...

www.haaretz.com

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 5d

And here's the decision: www.hogeraad.nl/actueel/nieu...

Supreme Court: Minister must perform reassessment of licence to export F-35 parts to Israel again

The Minister must perform the reassessment of the licence to export F-35 parts to Israel (hereinafter the "licence") again. In that reassessment, the Minister must apply the criterion of whether grant...

www.hogeraad.nl

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 5d

BREAKING: Dutch Supreme Court finds partially in favor of the Dutch state and orders the government to conduct a risk assessment review of export licenses regarding The Netherlands' participation in the F-35 program within 6 weeks.

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Reposted by León Castellanos-Jankiewicz

Christophe Paulussen @chpaulussen.bsky.social · 8d

Wonderful roundtable ‘ReArming Europe and the future of international and European law’ @tmcasser.bsky.social welcoming @machikokanetake.bsky.social as our new Academic Director! www.asser.nl/education-ev... @lijnzaad.bsky.social @clingendael.bsky.social @leoncastjan.bsky.social @paxvoorvrede.nl

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Reposted by León Castellanos-Jankiewicz

Forum on the Arms Trade @forumarmstrade.bsky.social · 8d

www.upi.com/Top_News/US/...

for more on this topic, see our resource page at www.forumarmstrade.org/catitoiii.html

Trump rescinds Biden-era firearms export rule to high-risk nations - UPI.com

The Trump administration has rescinded a Biden-era firearms export rule that prohibited the transfer of civilian weaponry to individuals in 36 countries deemed high-risk for them to fall into the hand...

www.upi.com

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 8d

🎙️ I was interviewed by @theworld.org about Mission Firewall, the new U.S.-Mexico initiative launched last week to prevent arms trafficking and cartel violence. Give it a listen: theworld.org/segments/202...

'Promising' new initiative to halt weapons flow from US sellers to Mexican cartels - The World from PRX

Mexico and the US have launched a new bilateral initiative aimed at disrupting the stream of illicit weapons across their shared border. The announcement came during the first meeting of the new US-Me...

theworld.org

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Reposted by León Castellanos-Jankiewicz

Ulad Belavusau @ulad-belavusau.bsky.social · 20d

Our new book "Politics of Memory Laws: Russia, Ukraine & Beyond" (co-edited with A. Gliszczyńska-Grabias, M. Mälksoo & A. Nußberger) is out with @hartpublishing.bsky.social! - How laws on historical memory shape war & security in 🇷🇺, 🇺🇦, their neighbours & Europe: www.bloomsbury.com/us/politics-...

The Politics of Memory Laws

This open access book explores the political utility and consequences of memory laws with a focus on how militant memory laws frame, underpin and generate inter…

www.bloomsbury.com

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 19d

Update: The ICJ has now issued its press release, with a link to Russia's application instituting proceedings against Australia and the Netherlands: www.icj-cij.org/sites/defaul...

www.icj-cij.org

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 19d

BREAKING: Russia appeals ICAO Council findings concerning the downing of Malaysia Airlines flight #MH17 at the International Court of Justice. Presumably, Russia has instituted proceedings against Australia and the Netherlands. Background explainer: www.leoncastellanos.com/mh17

MH17 Eleven Years Later: ICAO Finds Russia Breached International Law — León Castellanos-Jankiewicz

The Council of the International Civil Aviation Organization voted that Russia failed to uphold its international obligations.

www.leoncastellanos.com

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 19d

Staro lives press.princeton.edu/books/paperb...

Action and Reaction

A wide-ranging, interdisciplinary conceptual history of the changing meanings and metaphors of “action” and “reaction”

press.princeton.edu

Reposted by León Castellanos-Jankiewicz

Asser Institute @tmcasser.bsky.social · 20d

As Europe increases its defence production, how should law respond? Join us for a roundtable that examines the future role and direction of international and European law in regulating governmental and corporate decisions in the development, export, and use of weapons.
➡️ www.asser.nl/education-ev...

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Reposted by León Castellanos-Jankiewicz

Forum on the Arms Trade @forumarmstrade.bsky.social · 21d

@jwrchappell.bsky.social via @cipolicy.bsky.social concludes "Congress should be working towards a reclamation of their constitutional authority and an end to the system that allows the president to sell weapons to war criminals and human rights abusers..." internationalpolicy.org/publications...

Think Big to Rein in the Arms Trade - CIP

American weapons sales cause outsized harm. Congress can change that.

internationalpolicy.org

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · 23d

Grateful for the opportunity!

TraCe @trace-center.de · 23d

📣 Welcome back to TraCe, @leoncastjan.bsky.social!

Based at @jlugiessen.bsky.social, León returns as a TraCe Visiting Fellow from September to November 2025 – investigating European rearmament policy from the perspective of legal accountability.

Learn more: www.trace-center.de/en/about-us/...

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 26d

Are you working on EU rearmament or defence? Let's have coffee ☕

Asser Institute @tmcasser.bsky.social · 27d

❓How can Europe rearm responsibly while upholding human rights? Researcher León Castellanos-Jankiewicz (Asser Institute) won a NWO SSH XS Grant 2025 for RELY, a project exploring legal safeguards in EU arms production and transfer.

👉 Read more: www.asser.nl/about-the-as...

#LegalAccountability

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29d

The announcement is not just symbolic. These are Israel's arms transfers to Spain from 1990 according to @sipri.org
Note the standing orders of missiles, rockets and radar which Madrid has purchased since 2022.

León Castellanos-Jankiewicz @leoncastjan.bsky.social · 29d

Sánchez announces Spanish comprehensive arms embargo on Israel including import, export, transit and transhipment to be adopted next week.
english.elpais.com/spain/2025-0...

Spain’s PM announces total arms embargo on Israel and labels attacks on Palestinians ‘genocide’

Spanish Prime Minister Pedro Sánchez avoided breaking relations with Tel Aviv but launched nine retaliatory measures

english.elpais.com

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · Sep 8

On the limits of identity politics and intersectionality: "Under the pressures of algorithmic governance, biometric surveillance, and global migration, identity must be rethought as a diagram of transformation, not a taxonomy of attributes" tripleampersand.org/category-the...

Category Theory & Differential Identities* - TripleAmpersand Journal (&&&)

Why Identity, Why Category Theory? For a preview of the paper and see the related graphics click here. We are living in a moment of conceptual fatigue, if not the total decline of identity politics. O...

tripleampersand.org

León Castellanos-Jankiewicz @leoncastjan.bsky.social · Sep 7

From vicarious wars to remote wars -- to democratizing war? Great essay by David Bromwich via @thepointmag.bsky.social: thepointmag.com/politics/the...

The War Habit | The Point Magazine

On any given day for the past quarter of a century, the United States was probably dropping bombs on a country somewhere.

thepointmag.com

León Castellanos-Jankiewicz @leoncastjan.bsky.social · Sep 4

Rubio says ending illegal US arms shipments into Mexico is high on the bilateral agenda. But that's wishful thinking if US politicians don't act on domestic gun control www.nytimes.com/2025/09/03/w...

U.S. and Mexico Vow to Fight Crime While Respecting Sovereignty

www.nytimes.com

León Castellanos-Jankiewicz @leoncastjan.bsky.social · Sep 4

Having a big fan moment seeing the wonderful book by Momchil Milanov featured this rentrée littéraire. Congratulations, my friend: www.liberation.fr/plus/speciau...

«Le Ministère des rêves» de Momtchil Milanov : découvrez les premières pages du livre

En librairies depuis le 22 août, le premier livre du primo-romancier bulgare est l’une des sensations de la rentrée, entre conte initiatique et fable politique.

www.liberation.fr

León Castellanos-Jankiewicz @leoncastjan.bsky.social · Sep 3

On questioning our newfangled disinhibition for war granta.com/europes-mist...

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.’

granta.com

Reposted by León Castellanos-Jankiewicz

Financial Times @financialtimes.com · Aug 29

EU to tap entire €150bn loans-for-arms programme on.ft.com/4g3NWJM

EU to tap entire €150bn loans-for-arms programme

France, Italy, Spain and Poland among countries requesting support from project designed to spur defence spending

on.ft.com

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León Castellanos-Jankiewicz @leoncastjan.bsky.social · Aug 27

📑 New White Paper! Firearms violence in Latin America accounts for 70% of homicides. In this briefing, we underscore the need for comprehensive, data-driven responses to strengthen collaboration across governments and civil society: globalinitiative.net/wp-content/u...