León Castellanos-Jankiewicz
@leoncastjan.bsky.social
international law and arms trade. working on the b sides
leoncastellanos.com
leoncastellanos.com
Pinned
New Pathways Toward Supply Chain Accountability
Welcome to Cambridge Core
www.cambridge.org
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...
Reposted by León Castellanos-Jankiewicz
Save the date!
10 December, 16h00-17:30 CET, the online launch of our new Report on #Ukraine.
Weapons Compass: Proliferation and Control of Arms and Ammunition in Wartime Ukraine analyzes small arms proliferation and control efforts in Ukraine since the Russian full-scale invasion in February 2022
10 December, 16h00-17:30 CET, the online launch of our new Report on #Ukraine.
Weapons Compass: Proliferation and Control of Arms and Ammunition in Wartime Ukraine analyzes small arms proliferation and control efforts in Ukraine since the Russian full-scale invasion in February 2022
November 24, 2025 at 9:28 AM
Save the date!
10 December, 16h00-17:30 CET, the online launch of our new Report on #Ukraine.
Weapons Compass: Proliferation and Control of Arms and Ammunition in Wartime Ukraine analyzes small arms proliferation and control efforts in Ukraine since the Russian full-scale invasion in February 2022
10 December, 16h00-17:30 CET, the online launch of our new Report on #Ukraine.
Weapons Compass: Proliferation and Control of Arms and Ammunition in Wartime Ukraine analyzes small arms proliferation and control efforts in Ukraine since the Russian full-scale invasion in February 2022
ESG is done www.euronews.com/my-europe/20...
EU opens door to ESG labels for companies producing weapons
Despite objections from the left, the European Parliament has approved a tweak to sustainable finance benchmarks that would open it up to companies producing “controversial weapons”.
www.euronews.com
November 28, 2025 at 9:29 AM
ESG is done www.euronews.com/my-europe/20...
'"Beautiful opportunities are emerging,” CEO Joep van Beurden told FD. ' nltimes.nl/2025/11/24/d...
Dutch manufacturers expand into defense sector with €22 billion in government funding
Dutch manufacturing companies including Aalberts, Signify, and Kendrion are increasingly focusing on producing components for the defense sector, taking advantage of rising military budgets in the Net...
nltimes.nl
November 25, 2025 at 3:38 PM
'"Beautiful opportunities are emerging,” CEO Joep van Beurden told FD. ' nltimes.nl/2025/11/24/d...
"The calculations of how to build an effective fighting force are complex. Particularly when, on average, fewer than one-third of European Union citizens said they were willing to fight for their country in a war" www.nytimes.com/2025/11/24/b...
A Draft or Volunteers? Russian Threat Prompts Urgent Debate in Europe.
www.nytimes.com
November 25, 2025 at 7:40 AM
"The calculations of how to build an effective fighting force are complex. Particularly when, on average, fewer than one-third of European Union citizens said they were willing to fight for their country in a war" www.nytimes.com/2025/11/24/b...
Rainy Sunday reading Holly Case's latest: www.lrb.co.uk/the-paper/v4...
Holly Case · Thin Pink Glaze: Habsburg Legacies
We still live in the long shadow of Habsburg disintegration. In addition to the lingering legacy of 19th-century state...
www.lrb.co.uk
November 23, 2025 at 1:53 PM
Rainy Sunday reading Holly Case's latest: www.lrb.co.uk/the-paper/v4...
It was such a thrill to deliver this year's Hack for Humanity keynote at the Center for Human Rights and Humanitarian Studies in @watsonschoolbrown.bsky.social to discuss tech and permaviolence. I thank @ievajusionyte.bsky.social for the invitation! www.browndailyherald.com/article/2025...
Students aim to address global gun violence at annual Hack for Humanity event
The winning team, “Luna,” was awarded a $3,000 seed grant for their project.
www.browndailyherald.com
November 22, 2025 at 8:21 AM
It was such a thrill to deliver this year's Hack for Humanity keynote at the Center for Human Rights and Humanitarian Studies in @watsonschoolbrown.bsky.social to discuss tech and permaviolence. I thank @ievajusionyte.bsky.social for the invitation! www.browndailyherald.com/article/2025...
"The [Dutch] Ministry of Foreign Affairs told RTL Nieuws that it is “highly undesirable” that components from Dutch companies are still being found in Russian drones and missiles" nltimes.nl/2025/11/03/n...
New Dutch chips regularly found in Russian weapons despite sanctions
Dutch chips manufactured after the start of the war in Ukraine still regularly appear in Russian weapons, RTL Nieuws reports after analyzing data from over 5,000 weapon parts found by Ukrainian milita...
nltimes.nl
November 3, 2025 at 6:49 PM
"The [Dutch] Ministry of Foreign Affairs told RTL Nieuws that it is “highly undesirable” that components from Dutch companies are still being found in Russian drones and missiles" nltimes.nl/2025/11/03/n...
Reposted by León Castellanos-Jankiewicz
📣 #Vacancy: #SIPRI is hiring a Grants Acquisition and Development Manager.
Are you a strategic thinker with experience working in international environments?
Do you have a strong background in leadership and stakeholder management?
If so, we might be looking for you!
Apply now: bit.ly/4ntQ2od
Are you a strategic thinker with experience working in international environments?
Do you have a strong background in leadership and stakeholder management?
If so, we might be looking for you!
Apply now: bit.ly/4ntQ2od
November 3, 2025 at 8:11 AM
📣 #Vacancy: #SIPRI is hiring a Grants Acquisition and Development Manager.
Are you a strategic thinker with experience working in international environments?
Do you have a strong background in leadership and stakeholder management?
If so, we might be looking for you!
Apply now: bit.ly/4ntQ2od
Are you a strategic thinker with experience working in international environments?
Do you have a strong background in leadership and stakeholder management?
If so, we might be looking for you!
Apply now: bit.ly/4ntQ2od
Reposted by León Castellanos-Jankiewicz
If you speak Dutch, here is a long interview of me in NRC about European security
www.nrc.nl/nieuws/2025/...
www.nrc.nl/nieuws/2025/...
‘Het is cru, maar Europeanen moeten zorgen dat Oekraïne het gevecht levert, zodat de oorlog dáár blijft en niet hier komt’
Olivier Schmitt | Politicoloog: Oorlogsdeskundige Olivier Schmitt is blij verrast over de Europese militaire inspanningen. „Dit is echt een ander Europa dan we voor de Russische invasie in Oekraïne ha...
www.nrc.nl
November 2, 2025 at 7:44 PM
If you speak Dutch, here is a long interview of me in NRC about European security
www.nrc.nl/nieuws/2025/...
www.nrc.nl/nieuws/2025/...
Not sure what's scarier: globalising 3D-printed guns or the second amendment
www.bloomberg.com/news/feature...
www.bloomberg.com/news/feature...
The Popular 3D-Printed Gun Globalizing the Second Amendment
Designed by a German incel, the FGC-9 was created in a distinctly American spirit.
www.bloomberg.com
October 30, 2025 at 5:42 PM
Not sure what's scarier: globalising 3D-printed guns or the second amendment
www.bloomberg.com/news/feature...
www.bloomberg.com/news/feature...
🗞️New interview! I spoke to @okopressrss.plsky.eu about European rearmament. We discussed accountability gaps, defence spending, Russia's aggression against Ukraine, the ongoing Gaza war and lots more: oko.press/handel-broni...
Handel bronią i zbrodnie wojenne. Oto jak rządy i firmy unikają odpowiedzialności [ROZMOWA]
Niedawny raport wskazuje na firmy z Niemiec, Austrii i Francji, które dostarczały birmańskiej juncie wojskowej materiały do produkcji broni, skutecznie omijając istniejące sankcje. Takich przypadków j...
oko.press
October 28, 2025 at 5:14 PM
🗞️New interview! I spoke to @okopressrss.plsky.eu about European rearmament. We discussed accountability gaps, defence spending, Russia's aggression against Ukraine, the ongoing Gaza war and lots more: oko.press/handel-broni...
Reposted by León Castellanos-Jankiewicz
🆕 Wir starten heute mit unserem Blogsymposium „Politik-wissenschaftliche Selbstreflexionen in Zeiten des Krieges“. Den Auftakt geben Beiträge v. @hendrikpsimon.bsky.social, Alexander Libman, Claudia Brunner & Sabine Jaberg.
#PoWiundKrieg #Blogsymposium25 #polisky
Hier geht's zur Übersichtseite 👇.
#PoWiundKrieg #Blogsymposium25 #polisky
Hier geht's zur Übersichtseite 👇.
Politikwissenschaftliche Selbstreflexionen in Zeiten des Krieges
Blog-Symposium
www.pw-portal.de
October 27, 2025 at 7:59 AM
🆕 Wir starten heute mit unserem Blogsymposium „Politik-wissenschaftliche Selbstreflexionen in Zeiten des Krieges“. Den Auftakt geben Beiträge v. @hendrikpsimon.bsky.social, Alexander Libman, Claudia Brunner & Sabine Jaberg.
#PoWiundKrieg #Blogsymposium25 #polisky
Hier geht's zur Übersichtseite 👇.
#PoWiundKrieg #Blogsymposium25 #polisky
Hier geht's zur Übersichtseite 👇.
Reposted by León Castellanos-Jankiewicz
Europe is rearming to reduce dependence on the US and address the increased security threat from #Russia.
Chris Rogers outlines the criticality of #CivilianProtection in that expansion, and offers lessons:
www.justsecurity.org/122816/europ...
Chris Rogers outlines the criticality of #CivilianProtection in that expansion, and offers lessons:
www.justsecurity.org/122816/europ...
As Europe Rearms, Learn from the Pentagon’s Efforts to Modernize Civilian Protection
European militaries can adapt and operationalize civilian protection as they increase defense spending to protect themselves against Russia.
www.justsecurity.org
October 22, 2025 at 1:06 PM
Europe is rearming to reduce dependence on the US and address the increased security threat from #Russia.
Chris Rogers outlines the criticality of #CivilianProtection in that expansion, and offers lessons:
www.justsecurity.org/122816/europ...
Chris Rogers outlines the criticality of #CivilianProtection in that expansion, and offers lessons:
www.justsecurity.org/122816/europ...
Obviously retractionwatch.com/2025/10/21/l...
Less is more: Academic publishing needs ‘radical change,’ Cambridge press report concludes
Academic publishing needs “renewed focus and collective action” to embrace new approaches and ensure the future of the industry, concludes a report from Cambridge University Press, released last we…
retractionwatch.com
October 21, 2025 at 9:31 PM
Obviously retractionwatch.com/2025/10/21/l...
New constitutional complaint against German arms exports to Israel filed by @ecchr.bsky.social : www.ecchr.eu/pressemittei...
Pressemitteilung
Das European Center for Constitutional and Human Rights (ECCHR) unterstützt gemeinsam mit den palästinensischen Menschenrechtsorganisationen Palestinian Center for Human Rights (PCHR), Al Mezan und Al...
www.ecchr.eu
October 21, 2025 at 5:45 AM
New constitutional complaint against German arms exports to Israel filed by @ecchr.bsky.social : www.ecchr.eu/pressemittei...
For Germany, "the goal [is] to be “kriegstüchtig,” or fully “war capable,” by 2029. For Germany, he said, the main issues are increasing its armed forces from the current 182,000 to 260,000, with an additional 200,000 trained reservists" www.nytimes.com/2025/10/20/w...
Senior German General Says Europe Must Do All It Can to Help Ukraine
www.nytimes.com
October 20, 2025 at 3:46 PM
For Germany, "the goal [is] to be “kriegstüchtig,” or fully “war capable,” by 2029. For Germany, he said, the main issues are increasing its armed forces from the current 182,000 to 260,000, with an additional 200,000 trained reservists" www.nytimes.com/2025/10/20/w...
Reposted by León Castellanos-Jankiewicz
BIG ANNOUNCEMENT📣: I haven’t been this excited to be part of something new in 15 years… Thrilled to reveal the passion project I’ve been working on for the past year and a half!🙀🥳 (thread 👇)
October 15, 2025 at 12:22 PM
BIG ANNOUNCEMENT📣: I haven’t been this excited to be part of something new in 15 years… Thrilled to reveal the passion project I’ve been working on for the past year and a half!🙀🥳 (thread 👇)
“Our goal in the 3D printed community is that no government will ever be able to tell someone that they cannot have a gun.” www.forbes.com/sites/thomas...
Inside Facebook And Discord’s 3D Printed Ghost Gun Groups
The world’s biggest social media sites are home to thousands of 2nd Amendment devotees who believe anyone should be able to use a 3D printer to build their own gun. Meta, Discord and the DOJ are tryin...
www.forbes.com
October 16, 2025 at 9:28 AM
“Our goal in the 3D printed community is that no government will ever be able to tell someone that they cannot have a gun.” www.forbes.com/sites/thomas...
"military spending is inefficient for employment: spending on education and healthcare would create more jobs while reducing the federal budget" costsofwar.watson.brown.edu/paper/employ...
The Employment Impacts of Cuts to Federal Spending: Not All Cuts Are Created Equal
Economist and Costs of War Director of Programs Heidi Peltier (Senior Research Associate, Brown University) documents how the majority of the federal workforce involves military-related sectors, inclu...
costsofwar.watson.brown.edu
October 16, 2025 at 5:51 AM
"military spending is inefficient for employment: spending on education and healthcare would create more jobs while reducing the federal budget" costsofwar.watson.brown.edu/paper/employ...
New Situation Update from @smallarmssurvey.bsky.social : The Authorized Trade in Small Arms: Latin America from a Global Perspective www.smallarmssurvey.org/resource/aut...
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...
www.smallarmssurvey.org
October 15, 2025 at 4:13 PM
New Situation Update from @smallarmssurvey.bsky.social : The Authorized Trade in Small Arms: Latin America from a Global Perspective www.smallarmssurvey.org/resource/aut...
Nice work if you can get it job-boards.greenhouse.io/humanrightsw...
Deputy Director, Arms
Multiple Locations Considered
job-boards.greenhouse.io
October 15, 2025 at 1:55 PM
Nice work if you can get it job-boards.greenhouse.io/humanrightsw...
"the current discussion of arms expenditure in Europe requires more than abstract images of threat and adversaries. It needs critical voices pointing out actual problems and deficits in the defence policy of the EU member states and the EU institutions." blog.prif.org/2025/04/02/e...
Europe’s Defence Dilemma: Rising Militarization Amidst Industrial Fragmentation and Weak Export Controls - PRIF BLOG
The issue of arming Germany and the EU countries is currently dominating the headlines. The threat posed by Putin’s Russia and the uncertainty as to whether the USA under Trump will still stand by its...
blog.prif.org
October 14, 2025 at 6:42 AM
"the current discussion of arms expenditure in Europe requires more than abstract images of threat and adversaries. It needs critical voices pointing out actual problems and deficits in the defence policy of the EU member states and the EU institutions." blog.prif.org/2025/04/02/e...
A great and generous teacher - RIP
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...
October 6, 2025 at 9:43 AM
A great and generous teacher - RIP
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
October 5, 2025 at 10:06 AM
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/...
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.
October 3, 2025 at 8:30 AM
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.