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Lucas Roorda

@lroorda

Assistant professor Int'l law at Utrecht University. BHR specialist, also interested in IHL and IHRL. Aspiring outdoor nerd, drummer and ADHD gremlin. Destroy fascism. Free Palestine.

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19.10.2023
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Latest posts by Lucas Roorda @lroorda

Kom op, we hebben genoeg fantasie hier

08.03.2026 18:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Mijn tenen trokken net zo krom dat ze dwars door mijn schoenzolen heen gingen

08.03.2026 17:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Expert: Iran War Just Killed the β€œRules-Based Order”
Expert: Iran War Just Killed the β€œRules-Based Order” YouTube video by Owen Jones

I sat down with @owenjones.bsky.social to explain the Int’l law on the use of force applicable to the Iran War.

We discussed how the media fails to report not just the facts but the law and what can we do with an int’l law that seems unable to constrain rogue action

youtu.be/rQ5ijD7UMyc?...

07.03.2026 10:20 πŸ‘ 35 πŸ” 15 πŸ’¬ 0 πŸ“Œ 0

"De premier wil niet filosoferen over het de juiste keuze was Iran aan te vallen". Daar is ook weinig gefilosofeer voor nodig @robjetten.bsky.social. In tegenstelling tot over de vraag of Rob Jetten nu premier van Nederland is, of Dilan YesilgΓΆz.

06.03.2026 20:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Je wil Pedro Sanchez, je krijgt de nog goedkopere kloon van Rutte.

06.03.2026 20:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

In the Hills, the Cities is van eenzaam niveau

06.03.2026 12:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Dat bedoel ik - het feit dat ik zit mee te knikken met die column betekent dat er iets serieus mis is.

06.03.2026 11:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Serieus. Het is een goed teken als de belangrijkste politieke discussies weer plaatsvinden op de scheidslijn tussen liberalen en sociaaldemocraten, ipv tussen constructieve en rancuneuze politiek.

06.03.2026 10:34 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Ik verlang regelmatig naar de tijden dat ik het nog hartgrondig met Mathijs Bouman oneens was

06.03.2026 10:04 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

youtu.be/Ij3ZOO_OpaA?...

06.03.2026 08:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Mooi om te zien dat een oud-collega nog steeds scherp is

06.03.2026 08:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

When the PIL exam questions present themselves

06.03.2026 08:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Otto is one of the main reasons I'm teaching international law today - I started as junior lecturer when he was coordinating the same course I am now coordinating myself. Very happy to see he still gives a good example πŸ‘‡

06.03.2026 07:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Bored of Peace

05.03.2026 15:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Meet the new boss, same as the old boss 🎡🎢

05.03.2026 11:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Onze mensen over … AI-bedrijf Anthropic en het Pentagon Het Amerikaanse ministerie van Defensie zet techbedrijf Anthropic onder druk: volledige toegang tot zijn systemen of zware sancties. Houdt het bedrijf vast aan zijn principes of buigt het onder de dru...

Het Amerikaanse ministerie van Defensie zet #Anthropic onder druk: volledige toegang tot zijn systemen of zware sancties. De ontwikkelaar van Claude is het enige techbedrijf dat zich verzet. Marten Zwanenburg en @natalihelberger.bsky.social reageren in de media. bit.ly/46FFb58 @ivir-uva.bsky.social

05.03.2026 10:51 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Is it Cake? On Boobytrapped Pagers, IHL and Scenario-based Thinking [Dr. Lucas Roorda is Assistant Professor of International and European Law at Utrecht University, and a researcher at the Utrecht Center for Accountability and Liability Law (UCALL)] It sounds like…

I wrote about this tendency a year or two ago, to have these academic discussions as if they do not relate to real world events and empower bad actors (mostly in the closing paragraphs): opiniojuris.org/2024/10/15/i.... I was hoping it would lose relevance over time but I guess not.

05.03.2026 10:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

True. I don't follow him as much so I hadn't flagged this yet, but indeed. Another reason I wonder why we got this particular combination of authors - editorial choice maybe? In any case, poor judgment imho.

05.03.2026 10:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

My best guess is that when you have an administration that has so much disregard for the law that even coming up with the thinnest justification is too much, even serious experts are kinda caught off guard. And you cannot write a blog just repeating "it is bullshit" over and over.

05.03.2026 10:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

And when I say good, I mean he often writes these rapid response pieces (to the point where "has Marko written about it already" is a bit of a running gag) demolishing flimsy state justifications and giving great real world context. As I think academics should.

05.03.2026 10:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Completely. And not for the first time, so I absolutely agree that it is weird for academics to look for justification afterwards, as if that discussion happens in a vacuum. Thing is: Milanovic is normally very good with this stuff, so I wonder why he wrote this now.

05.03.2026 10:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That said, I am *not* claiming this is fair and just or that legality (at least under IHL) means we just have to accept it. I also wonder about the reasons for this more theoretical exercise, the authors are engaging in. It also does not sit really well with me.

05.03.2026 09:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Vice versa, the moment the US struck Iran, Donald Trump and Pete Hegseth also became legimitate targets under IHL. Not that it matters in practice (or rhetorically) but that is the other side of the coin in legal terms.

05.03.2026 09:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

There are good reasons why LOAC is agnostic in terms of who started, because it is hard to have reciprocal rules when one side can claim to be "right" in their exercise of force.

05.03.2026 09:25 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

That is not what it says actually. The weirdness of ad bellum and in bello law is that they can come to different conclusions on specific conduct. That Khamenei might be a legal target once the conflict starts does not mean it is lawful under other frameworks.

05.03.2026 09:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

(to be fair, I think Marco often does exemplary work pointing out very clearly and without equivocating when states come up with bullshit excuses for illegal behaviour, but this particular piece was not really necessary)

05.03.2026 09:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Is it Cake? On Boobytrapped Pagers, IHL and Scenario-based Thinking [Dr. Lucas Roorda is Assistant Professor of International and European Law at Utrecht University, and a researcher at the Utrecht Center for Accountability and Liability Law (UCALL)] It sounds like…

Imma quote myself here for a moment: It is easy to have these discussions purely in the abstract, without properly accounting for the consequences. But states and other parties to this conflict are reading this too. opiniojuris.org/2024/10/15/i...

05.03.2026 09:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Sorry I'm not more open-minded about LLMs, it's just some fucking maniacs shoveled out a bunch of useless bloatware featuring that technology, did not give me any chance to opt out, reorganized the entire economy around it, zeroed out gains made by green energy, and made it impossible to buy RAM

05.03.2026 05:17 πŸ‘ 17392 πŸ” 5761 πŸ’¬ 128 πŸ“Œ 102

Nederland: we hebben begrip, we zijn voorzichtig, we houden juridische kaders in het oog
Pete Hegseth: Death. Fury. Destruction. We will kill them all. Torpedos in everybody's houses. Missiles on every street corner. We will kick them when they're down. No one will escape. Everyone dead. God bless.

04.03.2026 13:17 πŸ‘ 101 πŸ” 36 πŸ’¬ 8 πŸ“Œ 3

Also the oxymoron of tomorrow. And tomorrow. And tomorrow.

05.03.2026 08:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0