Marco Roscini

Legum servi sumus ut liberi esse possimus

It was great to come and discuss cyber operations and international law with the participants, thank you for the invitation! @UKOSCE

You mean that international law which has a warrant out for Putin's arrest?

The world, Europe, and Spain have faced this critical moment before. In 2003, a few irresponsible leaders dragged us into an illegal war in the Middle East that brought nothing but insecurity and pain. Our response then must be our response now: NO to violations of international law. NO to the illusion that we can solve the world’s problems with bombs. NO to repeating the mistakes of the past. NO TO WAR. lamoncloa.gob.es/presidente/int…

Rechazamos la acción militar unilateral de EE.UU. e Israel, que supone una escalada y contribuye a un orden internacional más incierto y hostil. Rechazamos igualmente las acciones del régimen iraní y de la Guardia Revolucionaria. No podemos permitirnos otra guerra prolongada y devastadora en Oriente Medio. Exigimos la desescalada inmediata y el pleno respeto del derecho internacional. Es hora de retomar el diálogo y alcanzar una solución política duradera para la región.

What is a ‘threat’ of force under Art. 2(4) UN Charter? My answer is in an article I published almost ten years ago in the Netherlands International Law Review: shorturl.at/GwGqQ #iran #greenland #trump #internationallaw #gunboatdiplomacy theguardian.com/world/2026/feb…

If Congress doesn’t act, the last nuclear arms control treaty between the U.S. and Russia will expire. It would pointlessly wipe out decades of diplomacy, and could spark another arms race that makes the world less safe. This piece is worth the read. nytimes.com/2026/01/30/opi…

A reminder of this event at ⁦@ILaWWestminster :⁩ Rethinking Collective Self-Defence in International Law, 3 February, 6 pm westminster.ac.uk/events/rethink…

If you want to know whether Trump’s tariff threats are a violation of the principle of non-intervention, Chapter 3 of my book might be of interest. It explores what coercion is and whether economic coercion is unlawful under customary int’l law global.oup.com/academic/produ…

@arredondos @UW_WLS @ILaWWestminster Sadly it is, sorry!

@marcoroscini @UW_WLS @ILaWWestminster Is it in person only?

Join James Green and myself for ‘Rethinking Collective Self-Defence in International Law’ on 3 February @UW_WLS With global debate raging over threats to Greenland, this discussion couldn’t be more relevant #InternationalLaw ⁦@ILaWWestminster⁩ westminster.cventevents.com/event/website/…

We choose Denmark over US, Greenland's PM says bbc.in/4pVOa9j

Fiero di essere #europeo

You have a great idea for a PhD and you’re interested in doing it under my supervision? Studentships are now available: Quintin Hogg Trust (QHT) studentships – September 2026 entry | University of Westminster, London westminster.ac.uk/study/postgrad…

My new article on the ambivalent role of AI in determining the necessity and proportionality of self-defence against an armed attack has just been published in a fantastic special issue of International Law Studies #AI digital-commons.usnwc.edu/ils/vol107/iss…

Read our blogpost on the legal consequences of the increasing involvement of civilians in cyber and other digital activities during armed conflict

I look forward to participating today in the launch of our report on civilian involvement in cyber and other digital activities in armed conflict, an output of the Joint Initiative on the Digitilisation of Armed Conflict of the @ICRC and the @Geneva_Academy

I had two days of great discussions in Amsterdam on the AI-cyber interplay in armed conflict. I presented on Artificial Intelligence and the Obligation to Respect and to Ensure Respect for International Humanitarian Law. Thanks to all the organisers and participants! #ihl #ai

I very much enjoyed recording this. Thank you for the invitation to share thoughts with these amazing colleagues #nonintervention @OUPLaw

Looking forward to it!

Come and join us online if you can.