León Castellanos-Jankiewicz
@leoncastjan.bsky.social
international law and arms trade. working on the b sides
leoncastellanos.com
leoncastellanos.com
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.
Note the standing orders of missiles, rockets and radar which Madrid has purchased since 2022.
September 9, 2025 at 8:05 AM
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.
Note the standing orders of missiles, rockets and radar which Madrid has purchased since 2022.
📑 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...
August 27, 2025 at 1:55 PM
📑 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...
There is no record of Slovenia directly exporting weapons to Israel since at least 1990. But it has purchased Israeli large-calibre artillery over the years and one ship, according to the @sipri.org Arms Transfers Database:
August 1, 2025 at 9:09 AM
There is no record of Slovenia directly exporting weapons to Israel since at least 1990. But it has purchased Israeli large-calibre artillery over the years and one ship, according to the @sipri.org Arms Transfers Database:
🎉 Great news! I'm happy to announce that I have been awarded an SSH XS Grant by NWO (Dutch Research Council) for my next research project: www.nwo.nl/en/researchp...
July 28, 2025 at 11:25 AM
🎉 Great news! I'm happy to announce that I have been awarded an SSH XS Grant by NWO (Dutch Research Council) for my next research project: www.nwo.nl/en/researchp...
A little something just for you
July 25, 2025 at 5:17 PM
A little something just for you
A new legal ruling by the International Civil Aviation Organization could lead to new accountability avenues for the shooting of #MH17.
🔗 Full explainer: www.leoncastellanos.com/mh17
Thanks @mentourpilot.bsky.social for bringing the @icao.int decision to my attention.
🔗 Full explainer: www.leoncastellanos.com/mh17
Thanks @mentourpilot.bsky.social for bringing the @icao.int decision to my attention.
July 20, 2025 at 8:44 AM
A new legal ruling by the International Civil Aviation Organization could lead to new accountability avenues for the shooting of #MH17.
🔗 Full explainer: www.leoncastellanos.com/mh17
Thanks @mentourpilot.bsky.social for bringing the @icao.int decision to my attention.
🔗 Full explainer: www.leoncastellanos.com/mh17
Thanks @mentourpilot.bsky.social for bringing the @icao.int decision to my attention.
New report! We find that a transparency deficit in European weapons transfers undermines international human rights law. The research was commissioned by @ecchr.bsky.social and conducted at @uvalawschool.bsky.social and @tmcasser.bsky.social.
🔗 Full report: www.asser.nl/about-the-as...
🔗 Full report: www.asser.nl/about-the-as...
July 1, 2025 at 4:49 PM
New report! We find that a transparency deficit in European weapons transfers undermines international human rights law. The research was commissioned by @ecchr.bsky.social and conducted at @uvalawschool.bsky.social and @tmcasser.bsky.social.
🔗 Full report: www.asser.nl/about-the-as...
🔗 Full report: www.asser.nl/about-the-as...
International law could take a page from Nature's book: www.nature.com/articles/d41...
June 18, 2025 at 7:11 AM
International law could take a page from Nature's book: www.nature.com/articles/d41...
Mexico: We're suing Google
Kim Gordon:
Kim Gordon:
May 10, 2025 at 3:39 PM
Mexico: We're suing Google
Kim Gordon:
Kim Gordon:
VE Day in Amsterdam today 🕊️
May 5, 2025 at 4:52 PM
VE Day in Amsterdam today 🕊️
Such an honor to address the United Nations Working Group on Firearms in Vienna this week on the contribution of the Firearms Protocol to conflict prevention and peacebuilding! Read my speech on www.leoncastellanos.com
May 1, 2025 at 8:25 AM
Such an honor to address the United Nations Working Group on Firearms in Vienna this week on the contribution of the Firearms Protocol to conflict prevention and peacebuilding! Read my speech on www.leoncastellanos.com
Join us tomorrow at the @asilorg.bsky.social Hague Closing Plenary for an engaging discussion on how international law can curb wrongful weapons transfers.
📅 Friday, 18 April, 17:00-18:30 EST
📍 Washington Hilton, Washington D.C.
Sponsored by @tmcasser.bsky.social and @gemeentedenhaag.bsky.social
📅 Friday, 18 April, 17:00-18:30 EST
📍 Washington Hilton, Washington D.C.
Sponsored by @tmcasser.bsky.social and @gemeentedenhaag.bsky.social
April 17, 2025 at 2:26 PM
Join us tomorrow at the @asilorg.bsky.social Hague Closing Plenary for an engaging discussion on how international law can curb wrongful weapons transfers.
📅 Friday, 18 April, 17:00-18:30 EST
📍 Washington Hilton, Washington D.C.
Sponsored by @tmcasser.bsky.social and @gemeentedenhaag.bsky.social
📅 Friday, 18 April, 17:00-18:30 EST
📍 Washington Hilton, Washington D.C.
Sponsored by @tmcasser.bsky.social and @gemeentedenhaag.bsky.social
All parked and ready for #ASIL2025! Looking forward to catching up with friends and colleagues. Are you around? Drop me a line! 💌 @asilorg.bsky.social
April 15, 2025 at 11:22 AM
All parked and ready for #ASIL2025! Looking forward to catching up with friends and colleagues. Are you around? Drop me a line! 💌 @asilorg.bsky.social
🚨Our 2025 International Law Clinic is underway!🚨
Our students are working with the UN on human rights and the Firearms Protocol, tackling crucial issues related to illicit arms flows.
Learn more about this @uvalawschool.bsky.social & @tmcasser.bsky.social collab: www.asser.nl/about-the-as...
Our students are working with the UN on human rights and the Firearms Protocol, tackling crucial issues related to illicit arms flows.
Learn more about this @uvalawschool.bsky.social & @tmcasser.bsky.social collab: www.asser.nl/about-the-as...
March 19, 2025 at 9:23 AM
🚨Our 2025 International Law Clinic is underway!🚨
Our students are working with the UN on human rights and the Firearms Protocol, tackling crucial issues related to illicit arms flows.
Learn more about this @uvalawschool.bsky.social & @tmcasser.bsky.social collab: www.asser.nl/about-the-as...
Our students are working with the UN on human rights and the Firearms Protocol, tackling crucial issues related to illicit arms flows.
Learn more about this @uvalawschool.bsky.social & @tmcasser.bsky.social collab: www.asser.nl/about-the-as...
New publication! My colleague Antonio Guzmán Mutis and I have an article in The George Washington International Law Review highlighting the accountability deficit for wrongful European arms exports from a human rights perspective.
🔗 Open access: www.thegwilr.org/volume-56-is...
🔗 Open access: www.thegwilr.org/volume-56-is...
February 28, 2025 at 3:42 PM
New publication! My colleague Antonio Guzmán Mutis and I have an article in The George Washington International Law Review highlighting the accountability deficit for wrongful European arms exports from a human rights perspective.
🔗 Open access: www.thegwilr.org/volume-56-is...
🔗 Open access: www.thegwilr.org/volume-56-is...
#CDMX! Still time to join this panel next Tuesday on trafficking and diversion of firearms in Latin America with Prof. @sergioaguayo.bsky.social, Pablo Arrocha (SRE, México), Ivan Contente Marques (OAS), and Cecilia Farfán-Méndez.
Register: docs.google.com/forms/d/e/1F...
Register: docs.google.com/forms/d/e/1F...
February 21, 2025 at 10:26 PM
#CDMX! Still time to join this panel next Tuesday on trafficking and diversion of firearms in Latin America with Prof. @sergioaguayo.bsky.social, Pablo Arrocha (SRE, México), Ivan Contente Marques (OAS), and Cecilia Farfán-Méndez.
Register: docs.google.com/forms/d/e/1F...
Register: docs.google.com/forms/d/e/1F...
Great to be back at @uvalawschool.bsky.social to work with talented students at the International Law Clinic. Our client this year is the UN Global Firearms Programme. Watch this space!
February 18, 2025 at 8:21 PM
Great to be back at @uvalawschool.bsky.social to work with talented students at the International Law Clinic. Our client this year is the UN Global Firearms Programme. Watch this space!
Join us in Mexico City! International Forum on trafficking and Diversion of Firearms in Latin America: Responses, and Responsibility. With @sergioaguayo.bsky.social, Pablo Arrocha, Ivan Marques and Cecilia Farfán.
📍In-person, 25 Feb, 9:30 @CIDE MX
Registration: docs.google.com/forms/d/e/1F...
📍In-person, 25 Feb, 9:30 @CIDE MX
Registration: docs.google.com/forms/d/e/1F...
February 13, 2025 at 1:52 PM
Join us in Mexico City! International Forum on trafficking and Diversion of Firearms in Latin America: Responses, and Responsibility. With @sergioaguayo.bsky.social, Pablo Arrocha, Ivan Marques and Cecilia Farfán.
📍In-person, 25 Feb, 9:30 @CIDE MX
Registration: docs.google.com/forms/d/e/1F...
📍In-person, 25 Feb, 9:30 @CIDE MX
Registration: docs.google.com/forms/d/e/1F...
Nos vemos en México para hablar de tráfico de armas con @sergioaguayo.bsky.social, Pablo Arrocha, Ivan Marques y Cecilia Farfán. Con palabras de nuestro anfitrión @perezricart.bsky.social y @romainlecour.bsky.social.
🗓️ 25 de febrero | 09:30
📍 CIDE, CDMX
👉 Registro: docs.google.com/forms/d/e/1F...
🗓️ 25 de febrero | 09:30
📍 CIDE, CDMX
👉 Registro: docs.google.com/forms/d/e/1F...
February 7, 2025 at 4:38 PM
Nos vemos en México para hablar de tráfico de armas con @sergioaguayo.bsky.social, Pablo Arrocha, Ivan Marques y Cecilia Farfán. Con palabras de nuestro anfitrión @perezricart.bsky.social y @romainlecour.bsky.social.
🗓️ 25 de febrero | 09:30
📍 CIDE, CDMX
👉 Registro: docs.google.com/forms/d/e/1F...
🗓️ 25 de febrero | 09:30
📍 CIDE, CDMX
👉 Registro: docs.google.com/forms/d/e/1F...
All welcome to this webinar on accountability for wrongful weapons transfers @forumarmstrade.bsky.social. Together with Shahd Hammouri, @jamesyap.bsky.social and Marina Aksenova we will discuss ongoing litigation.
📅 Tuesday, Jan 14
⏰ 16:00-17:00 CET
🔗 Register here: us02web.zoom.us/webinar/regi...
📅 Tuesday, Jan 14
⏰ 16:00-17:00 CET
🔗 Register here: us02web.zoom.us/webinar/regi...
January 8, 2025 at 1:09 PM
All welcome to this webinar on accountability for wrongful weapons transfers @forumarmstrade.bsky.social. Together with Shahd Hammouri, @jamesyap.bsky.social and Marina Aksenova we will discuss ongoing litigation.
📅 Tuesday, Jan 14
⏰ 16:00-17:00 CET
🔗 Register here: us02web.zoom.us/webinar/regi...
📅 Tuesday, Jan 14
⏰ 16:00-17:00 CET
🔗 Register here: us02web.zoom.us/webinar/regi...
Peace and good tidings to all!
December 24, 2024 at 4:33 PM
Peace and good tidings to all!
That's a wrap! Thank you for the exciting journeys this year & see you in 2025 🫰
December 20, 2024 at 8:50 AM
That's a wrap! Thank you for the exciting journeys this year & see you in 2025 🫰
Microsoft Outlook user experience:
December 10, 2024 at 12:54 PM
Microsoft Outlook user experience:
I like Nick Cave so much that my #1 listen is their opening band
December 6, 2024 at 7:47 PM
I like Nick Cave so much that my #1 listen is their opening band
Monday, Tuesday, Wednesday? Find out in Geneva this week at the UN Business and Human Rights Forum!
November 24, 2024 at 5:55 PM
Monday, Tuesday, Wednesday? Find out in Geneva this week at the UN Business and Human Rights Forum!