Today, 189 out of 193 officially recognised nation-states have a written constitution, and 75% of these have been ratified since 1975. How did this worldwide diffusion of constitutions come about?

Tech company Eyeball collects images and data on young amateur football players on a large scale. But is this allowed? Bart Custers, Professor of Law and Data Science, and Gerrit-Jan Zwenne, Professor of Law and Digital Technologies, comment on the issue in ‘NRC’ newspaper.

Giovanni Gruni publishes a peer reviewed paper in the Korean Journal of international and Comparative Law.

In recent years, much research has been conducted at the Department of Labour Law on the topic of sustainability and fundamental labour rights. Linked to this field is a journal: the International Labor Rights Case Law Journal (ILaRC).

Dimiter Toshkov, Associate Professor at Leiden University, told CGTN Europe that the Dutch election outcome reflects growing support for pragmatic and pro-European politics. He highlights D66’s focus on education, climate policy and European cooperation as key to its strong performance.

From cities that sometimes deviate from national foreign policy to the direct influence of geopolitics on local developments, PhD candidate Pieter Jeroense, director of VNG International, examined seventy years of the internationalisation of Dutch municipalities and observed notable trends.

The IHL Clinic offers outstanding LLM candidates the chance to work pro bono on KGF projects and gain practical experience in humanitarian law in cooperation with practitioners working in the humanitarian field.

De Europese Unie bekijkt mogelijkheden om geblokkeerde Russische tegoeden aan te wenden ter ondersteuning van Oekraïne. Joris Larik, universitair hoofddocent Europees en internationaal recht, duidt de zaak in een interview voor Al Jazeera.

The International Institute of Air and Space Law hosted a book launch event at the Leiden Law School on March 20, 2025, featuring the launch of two important publications in the field of air and space law.

The law and Artificial Intelligence (AI) applications need to be better aligned to ensure our personal data and privacy are protected. PhD candidate Andreas Häuselmann can see opportunities with AI, but dangers if this does not happen.

On 27 February 2025, Melanie Fink took part in a Workshop on ‘Lawyering for change - but what change exactly?’ that took place at the University of Amsterdam and was organised by Pola Cebulak, Marta Morvillo, and Stefan Salomon.

Anmol Dhawan (24) graduated cum laude from the Advanced LLM in Air and Space Law in Leiden on 28 August 2023. He comes from Mumbai in India and did his bachelor law studies at National Law University Delhi. He has been in the Netherlands since September 2022, so over one year now.

Ticketmaster – the largest ticket sales company in the world – is under fire from both consumers and Dutch MPs. The reason is the sale of tickets for the Lowlands festival, where resale tickets are costing at least 100 euros more than the original ticket price of 300 euros. Political parties GroenLinks,…

Leiden2022 is a 365-day science festival for everyone who has a sense of curiosity. Scientists from Leiden University will be making a major contribution. On 10 November, Leiden2022 presented the programme for the coming year, when Leiden will be European City of Science.

The dramatic geopolitical changes of the last few years and other crises have led the EU to reconsider the function and role of its internal market. Increased focus is now placed on ensuring the future competitiveness, economic security and resilience of Europe.

On 8 December 2017, the European Commission decided that the International Skating Union (ISU)’s eligibility rules, which impose severe penalties on athletes participating in speed skating competitions that are not approved by the ISU, are in breach of EU competition law.

On 17 November 2014, the Leiden Law School and the University of Beihang, China signed a Memorandum of Understanding.

On 21 January 2019 Barbora Budinska and Melanie Fink, researchers at the Europa Institute, spoke at the Workshop ‘Accountability and Control of European Multilevel Administration: Current Challenges in EU Administrative Law’.

For the spring semester 2025, the Austria Centre Leiden and the Institute History are excited to welcome Prof. Eva Pfanzelter to Leiden for her term as Visiting Professor in Central European Studies. Prof. Pfanzelter will teach two classes, give public talks in Leiden and around The Netherlands and…

The Leiden University team representing the International Institute of Air and Space Law (IIASL) won the World Finals of the Manfred Lachs Space Law Moot Court Competition that took place in Paris on 20 September 2022.

The International Astronautical Congress (IAC) that took place last week in Paris was extremely successful for IIASL.

Children have never acquired their own position in migration law and that is now slowly changing, according to Peter Rodrigues in ‘One World’. Partly as a result of the Children’s Rights Convention and judgments by the Court of Justice in Luxemburg, the tide seems to be turning and there is now more…

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…

The International Institute of Air and Space Law (IIASL) at Leiden University has released a report highlighting that the European Air Traffic Management (ATM) transformation is hindered more by regulatory complexity and political fragmentation than by technological limitations.

On 13 February 2018, the European Law Expertise Centre (ECER) and the newly established Centre for International Law (CIR) jointly organised a Brexit conference on the practical implications of international and European law of the Brexit for the interpretation and application of the law in practice…

On October 9th, Peter Alexander Kerkhof succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Peter Alexander on this great result.

On 19 November 2018, the American Bar Association (ABA), Section of Antitrust Law organized a teleconference “Sports and Antitrust: Breaking the Ice”.

Meloni’s plan om asielzoekers in Albanië op te vangen blijkt door juridische complicaties niet haalbaar. Mark Klaassen, universitair docent migratierecht, bespreekt de kwestie in RTL nieuws.

The Academic Society for Competition Law (ASCOLA) will organize its 11th annual conference from Thursday 30 June to July 2 2016 at Leiden University.

At two recent events, Ben Van Rompuy, Assistant Professor of competition law at the Europa Institute in Leiden, discussed current developments in the application of EU competition rules to regulatory aspects of sport.

The International Institute of Air and Space Law was delighted to host the 14th edition of the Leiden-Sarin International Air Law Moot Court Competition – for the first time – in Leiden! After three years of online mooting owing to the pandemic, this year’s competition was held again in person.

On the 28th of April 2021, The Europa Institute welcomed Mr. Menno Cox, Policy Officer at the European Commission (DG CONNECT).

On 10 May 2021, Melanie Fink and Barbora Budinská published their views on recent developments in the areas of EU regulation of Artificial Intelligence and the Banking Union respectively as Op-Eds on EU Law Live.

How can groundbreaking research help Europe tackle the huge challenges it faces? At the launch of the Leiden Europe Hub, academics and policymakers discussed this in the heart of European democracy: the European Parliament.

How can governments reach their policy goals in the most effective way? Which manner of financing is the most suitable? Does the spirit of our times call for new forms of subsidy? What does the future of subsidy law look like?

This publication examines the issues regarding the cross-border resolution of financial institutions, focusing on the power allocation between the home and host resolution authorities, i.e. the jurisdiction rule.

On Monday December 17th the ILS 2.0, SOLID project will hold an afternoon Symposium on ‘Challenges to European Integration: welfare states and free movement in the EU’ from 11.45 – 16.30. The symposium will take place in room A.014 at the Kamerlingh Onnes Building (Steenschuur 25) of Leiden Law Scho…

The International Institute of Air and Space Law (IIASL) at Leiden University has joined the Civil Air Navigation Services Organisation (CANSO) as its newest Research and Academia member.

On Wednesday 13 December, Melanie Fink will defend her doctoral thesis ‘Frontex and Human Rights: Responsibility in “Multi-Actor Situations” under the ECHR and EU Public Liability Law’. The defence will take place at 10.00 hrs at the Academy Building of Leiden University, Rapenburg 73. The supervisors…

Last Friday, 2 February, Mariana Gkliati presented a paper at the Seminar, ‘Controlling Migration through Cooperation: Recent trends in the externalisation of migration control’, at Tilburg University, which was discussed by Thomas Spijkerboer and Thomas Gammeltoft-Hansen.

From 2-4 November Jorrit Rijpma taught the students of the Master in European Law at the European Public Law Institute in Athens.