Almost a century passed since the much-celebrated judgement in the case concerning the Factory of Chorzów was delivered. This 1928 judgement of the Permanent Court of International Justice affirmed the essential principle of ‘reparation’ in international law, claiming that ‘restitution’ is the preferred…

At a time of urgent threats to both the planet and multilateralism, Brian McGarry (Assistant Professor of Public International Law at the Grotius Centre for International Legal Studies) has published a new volume on the past and future of international environmental law.

This article offers an inaugural assessment of how silences implicate international law-making in cyberspace through descriptive and normative lenses.

The Frits Kalshoven International Humanitarian Law Competition, organised by the Netherlands Red Cross and Belgian Red Cross-Flanders, lets students explore the legal framework governing armed conflict. Eight teams from Belgium and the Netherlands competed in the 19th edition (23–27 February 2026) in…

This article traces the evolution of interpretations of international law and international cyber norms on responsible state behaviour in cyberspace by reassessing five major – and allegedly state-led – cyber operations: Stuxnet 2010; Belgacom 2013-2014, the Ukrainian power grid 2015, the US presidential…

The US attack and the arrest of Venezuelan President Maduro have raised questions worldwide. Two Leiden experts in international law, Anna Marhold and Jens Iverson of the Grotius Centre, told media outlets that this constitutes a violation of international law.

Ending the United Kingdom’s (UK) forty-seven year European Union (EU) membership has fundamentally transformed its relationship with the EU. After years of tumultuous negotiations, international law now once again governs the UK’s relationship with the EU. This has resulted in a sophisticated body of…

The International Court of Justice (ICJ) has commenced hearings on Israel’s ban on UN organisation UNRWA. Larissa van den Herik, Professor of Public International Law, commented on news programma NOS Nieuws.

From 29 to 30 October 2024, the Kalshoven-Gieskes Forum (KGF) and the Grotius Centre for International Legal Studies had the pleasure of hosting an inspiring authors’ workshop in The Hague for the forthcoming Research Handbook, Victims' Rights under Public International Law, edited by Dr Robert Heinsch…

Leiden Law School’s Grotius Centre for International Legal Studies is pleased to announce its first massive open online course (MOOC). On 18 January 2016, International Law in Action: A Guide to the International Courts and Tribunals in The Hague will go live on Coursera, an education platform that…

We are pleased to invite abstracts for a conference on ‘Counterclaims in International Law’ to be held at Leiden University on 27 June 2024, in collaboration with Queen Mary University of London.

Italy recently struck a deal with Albania to accommodate thousands of boat migrants in two reception centres in Albania. Is this not contrary to asylum law? Mark Klaassen, Assistant Professor in immigration law comments in a Dutch RTL news article.

‘Niet het internationaal recht zelf schiet tekort, maar staten en politici die de regels negeren’, stelt Larissa van den Herik, hoogleraar internationaal recht, in een artikel in NRC waarin verschillende experts zich uitspreken. Zij betoogt dat de internationale rechtsorde vooral onder druk staat door…

A series of workshops at Leiden University and the University of Hamburg will act as a forum in which international legal scholars whose research adopts a behavioural approach can present their works-in-progress and gain feedback from a broad range of peers, including scholars in economics and cognitive…

Vier leden van het Grotius Centre, Larissa van den Herik, Carsten Stahn, Anna Marhold en emeritus hoogleraar Nico Schrijver, stellen in verschillende media dat de recente aanval op Iran in strijd is met internationaal recht.

Carsten Stahn has just published Confronting Colonial Objects: Histories, Legalities and Access to Culture. The book is part of the OUP Cultural Heritage Law and Policy Series.

The Grotius Centre for International Legal Studies & The Kalshoven-Gieskes Forum on International Humanitarian Law cordially invite you to a Panel Discussion on “The Dynamics of the Syria Conflict: Challenges for Contemporary International Law” .

Every year, the Netherlands Red Cross and Belgian Red Cross-Flanders organise the Frits Kalshoven International Humanitarian Law Moot Court Competition. Eight teams from Belgium and the Netherlands participated in the 17th edition of the competition, from 5-7 March 2025 in The Hague. The team from Leiden…

Dr. Cecily Rose, Associate Professor at the Grotius Centre for International Legal Studies, has appointed by the Dutch Government to the Advisory Committee on Public International Law, with effect as of 1 January 2025.

The UN International Law Commission was established soon after the Second World War with the mandate to promote the progressive development of international law and its codification. It is a subsidiary organ of the UN General Assembly.

How can we assist Universitas Indonesia's department of International law to improve their educational and applied research programs on Transnational Law, Asset Recovery and International Investment Arbitration, with an eye on Indonesia’s security and rule of law reform agenda and the needs of the…

The Advisory Committee on Public International Law (Dutch abbreviation CAVV) is an independent body which provides the government and parliament of the Netherlands with advice, both solicited and unsolicited, on issues related to public international law.

Dr Amy Strecker has recently been awarded a LGI BREED grant to develop her project on property and spatial justice in international law. Building on her previous research into landscape protection from cultural heritage, environmental and human rights perspectives, Amy will combine legal analysis with…

The Hague / Amsterdam, 1 to 5 August 2016. The summer school Sexual Orientation and Gender Identity in International Law: Progress, Consolidation, Stagnation will focus on the emergence of SOGI issues in human rights law, international criminal law, and refugee law.

International law experts have voiced concerns about the recent attack on Iran. Legal philosopher Andreas Kinneging expressed a different perspective in an interview with ‘Trouw’ newspaper: 'In times of crisis, the best in people comes out.'

Last week, Dr. Joris Larik, Assistant Professor of Comparative, EU and International Law at Leiden University College and convener of the International Justice major, gave a presentation at the Second World Meeting of Societies for International Law at the Peace Palace in The Hague.

In October, Sophie Starrenburg was elected as a member of the Coordinating Committee of the ESIL Interest Group on the International Law of Culture. She will work alongside Giovanni Carlo Bruno (Italian National Research Council), Andrzej Jakubowski (Polish Academy of Studies), and Lucas Lixinski (University…

On 28 June 2024, Dr Kristof Gombeer spoke on State jurisdiction and the protection of people at sea at the 81st Biennial Conference of the International Law Association (ILA) in Athens, Greece.

Around the world, there is a growing movement to decolonise university curricula, with both students and educators seeking to disrupt existing epistemic hierarchies within higher education. This research project aims to unravel what decolonising means in general and what it means for the International…

De Franse uitnodiging van president Marcron aan Nederland en zes andere Europese bondgenoten, om te praten over ‘uitgebreide nucleaire samenwerking’, past volgens het internationaal recht binnen het bestaande verdrag uit 1970, zegt Anna Marhold, expert in internationaal recht, in Dagblad Trouw.

It is difficult to hold international organisations (IOs) accountable for human rights violations. Gisela Hirschmann (Institute of Political Science, Leiden University) introduces the concept of pluralist accountability, whereby third parties set the standards for IOs’ actions in relation to human rights,…

A conference organized by Niels Blokker, professor of International Institutional Law and Ramses Wessel (RUG) to celebrate the 20th anniversary of the International Organizations Law Review.

The Ghent Rolin-Jaequemyns International Law Institute (GRILI) is a research institute within the Faculty of Law at Ghent University. Founded in 2015 at the initiative of Prof. Tom Ruys, the Institute brings together the existing expertise within the law school in the broader international law domai…

Professor Eric De Brabandere has been appointed as the new Director/Head of Department of the Grotius Centre for International Legal Studies, succeeding to Professor Nico Schrijver who has led the Centre for more than 12 years. Eric De Brabandere holds the chair of international dispute settlement law…

On 31 January 2025, Leiden University participated in the Dutch National Rounds of the 2025 Philip C. Jessup International Law Moot Court Competition, the world’s oldest and largest moot court competition, featuring more than 800 teams from over 100 countries and jurisdictions.

One of our most engaged and expert scholars is bidding farewell. After forty years at Leiden Law School, first as a student and later as a professor, Niels Blokker reflects on his university career.

On 30 November 2016, Cecily Rose participated in a Symposium held at the T.M.C. Asser Institute on 'A Court for the World? Trust in the ICJ 50 years after South West Africa'.

On Wednesday 9 March, a Faculty meeting about the war in Ukraine was held for staff and students in the Lorentz Lecture Hall. By the time the meeting started at 17.00 hrs, the 220 available seats in the lecture hall had been filled mainly by large numbers of students.

On 16 February, Leiden University participated in the Dutch National Rounds of the 2024 Philip C. Jessup International Law Moot Court Competition, the world's largest moot court competition featuring participants from approximately 700 law schools across the world.

Het internationaal recht lijkt in het licht van de gebeurtenissen in Gaza onder druk te staan. Het NRC publiceerde een groot artikel waarin zes experts internationaal recht, waaronder Larissa van den Herik, hoogleraar internationaal recht, werden geïnterviewd over de toekomst van de internationale r…