On the occasion of the 80th anniversary of the magna carta of civil aviation, the Convention on International Civil Aviation (Chicago Convention 1944), Professor Steven Truxal has written a leading piece for the European Civil Aviation Conference: The Chicago system: a steadfast legal blueprint for…

Most of the vast Tibetan literature was authored by monks. They were Buddhists par excellence, educated in a system in which Indic- and Indian-inspired texts played a pivotal role. What they wrote was primarily religious or philosophical in nature, but also extended to ‘secular’ topics. Through the…

On Wednesday, 14 May 2025, Catherine O'Regan will deliver the annual Van Vollenhoven Lecture

In pursuit of solutions to China’s inter-regional cross-border insolvency cooperation, my doctoral dissertation provides 10 original recommendations accompanied with comments, which are entitled “China’s Inter-regional Cross-border Insolvency Arrangement” (CICIA).

There is an increasing amount of attention on EU and its Member States contributions to implementation of two landmark agreements: the Paris Climate Agreement and the UN Agenda 2030 with Sustainable Development Goals (SDGs). Absent from the current literature is an analysis of the political effect of…

On 7 May 2020, Jolanda van der Vliet defended her thesis 'The International Legal Protection of Environmental Refugees. A human rights-based, security and State responsibility approach'. The doctoral research was supervised by Prof. N.J. Schrijver and Prof. J.J.C. Voorhoeve.

On 21 March 2019, James Welch defended his thesis 'The Grotius Sanction: Deus Ex Machina. The legal, ethical, and strategic use of drones in transnational armed conflict and counterterrorism'. The doctoral research was supervised by Prof. dr. P.B Cliteur.

With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…

Previous studies have identified institutional, organizational, and individual factors that promote innovation in public organizations. Yet they have overlooked how the type of public administration—and the type of administrators—is associated with innovative attitudes.

Legal scholars and professionals are confronted with a rapidly increasing volume of legal publications. Only part of these publications are relevant enough to be cited. This project aims to determine which documents that are, and whether alternative metrics are a reliable way to predict whether documents…

On 20 October 2021 Michael Ramsden defended the thesis 'The Role of the United Nations General Assembly in Advancing Accountability for Atrocity Crimes: Legal Powers and Effects'. The doctoral research was supervised by Prof. N.M. Blokker.

The Executive Committee consists of the following members:

In The Hague, the Leiden Centre of Data Science (LCDS) in close collaboration with the Centre for Professional Learning (CPL) is developing a Legal Technologies programme. They do so in cooperation with three faculties of Leiden University, namely the Faculty of Governance and Global Affairs (FGGA),…

On 23 June 2020, Santy Kouwagam defended her PhD-thesis 'How lawyers win land conflicts for corporations: Legal Strategy and its influence on the Rule of Law in Indonesia'. The doctoral research was supervised by Prof. A.W. Bedner and Prof. C.E. von Benda-Beckmann.

On 1 April 2023, Rowie Stolk of the Department of Constitutional and Administrative Law started a new appointment for 0.7 FTE at Empirical Legal Studies Leiden (ELS@Leiden). ELS provides a platform that brings together legal scholars and social scientists to collaboratively explore legally relevant…

Technological developments are rapidly advancing. The Leiden Legal Technologies Program was on the agenda of the Advisory Committee at their second meeting held on 15 October. The decision to start the program in January 2021 was taken unanimously. It was the official moment to announce the completion…

Abstract submission is now open for the international conference of the ELS Academy, in Amsterdam on September 1 and 2. For the 2022 International ELS Conference, we invite all involved in legal research using qualitative and/or quantitative methods to submit abstracts, that may focus on ongoing or…

ELS lab member Helen Pluut concluded this year’s lecture series on Empirical Methods in Legal Research. Helen discussed diary studies as an example of multilevel research designs.

On 7 November 2018, Catherine Harwood defended her thesis 'Navigating Between Principle and Pragmatism: The Roles and Functions of Atrocity-Related United Nations Commissions of Inquiry in the International Legal Order'. The doctoral research was supervised by Prof. dr. L.J. Van den Herik and Prof.…

This volume was edited by Jeroen Duindam, Jill Harries, Caroline Humfress, and Nimrod Hurvitz.

Inaugural lecture

How can data analytics be used as a research method in the field of legal research? This question was addressed during the Research Lab Legal Data Science on 23 September, 2016.

Ever since the coronavirus crisis began, people have been arguing about the legal justification for measures. The problem: far-reaching measures such as an obligation to wear face masks, get tested, or school closures violate the Constitution. The Cabinet had the difficult task of weighing fundamental…

Identifying the gaps in the legal framework for EU activities in the maritime security domain, and specifically in the areas of combating piracy, human smuggling or trafficking and drug trafficking.

Recently, a new edition of the ELS bulletin was sent out. Furthermore, we are thrilled to share the Midterm Report of the ELS lab @Leiden with you!

On Friday 24 February Prof. Judith Masson, professor of Socio-legal Studies at Bristol University and a Fellow of the Academy of Social Science in the U.K., will deliver a lecture within the Leiden Socio-Legal Series.

Abstract submission is now open for the international conference of the ELS Academy, in Amsterdam on September 1 and 2.

This project aims to explore and examine the factors that impact upon the efficacy of information disclosure duties pertaining to customer data use in online business.

On Friday January 13 between 13.00 - 15.00 (room C 1.04 of the Old Observatory) there will be another Leiden Socio-Legal Lecture, entitled 'Constitutional Ethnography, Counter-Constitutions, and the Study of Form, Sediment and Trajectory'.

Last week, the first seven professionals successfully completed the new Leiden Legal Technologies Programme (LLTP). They received their certificates during a festive ceremony. Smiling faces all around for founder Jaap van den Herik, Programme Director Nikol Hopman, and The Hague alderman Saskia Bruines.…

In the Netherlands, euthanasia has no longer been a criminal offence since 2002. The practice is governed by very strict conditions. Nonetheless, the legal issues surrounding it are still the focus of heated discussion, according to Leiden professors. They are discussing the issue on 18 March during…

Mr. S. Al Daghistani defended his thesis on 30 November 2017

On 5 June 2018 Emile Beenakker defended her doctoral thesis ‘The implementation of international law in the national legal order: A legislative perspective’. The doctoral research was supervised by Professor W.J.M. Voermans.

Building cultures of legality: lawmaking and anxiety in the office of the Governor General.