Our Master Public International Law (L.L.M.) you will gain understanding of the legislation that governs international relations in a complex global society

Legitimacy is generally a term that is associated with the state. The term surfaces when there are problems with state legitimacy—when it is lacking or absent. This present volume attempts to think through the relevance of the concept of legitimacy for other political actors than the state.

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Autophagy is a fundamental degradative process, maintaining cellular homeostasis and functions in host defense against intracellular pathogens, including mycobacteria and Salmonella.

In art history, performance is categorized as performance art and defined as live-act. However, performance is no longer conceived of by artists as live-act only.

On 18 April, Alexandre Tavadian defended the thesis 'The International Civil Service: Redefining Its Independence'. The doctoral research was supervised by Niels Blokker and Brian McGarry.

The coronacrisis makes painfully clear that a transboundary crisis requires a transboundary response. The European Union could play a key role, but that has not happened so far. Political scientist Amy Verdun (Leiden University) explains why.

On 23 February 2022, Cale Davis defended the thesis 'Prosecutorial Discretion in International Criminal Justice'. The doctoral research was supervised by Prof. C. Stahn en Dr. J.C. Powderly.

Organized by the Grotius Centre for International Legal Studies, this programme enables students and professionals from all over the world to engage in discussions on the prospects and challenges of international criminal justice. The announcement for the next edition is scheduled to take place…

For the upcoming conference

To an algebraic curve C over the complex numbers one can associate a non-negative integer g, the genus, as a measure of its complexity.

Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.

The International Institute of Air and Space Law is one of the leading international academic research and teaching institutes in the world, specialising in legal and policy issues regarding aviation and space activities in the broadest sense of the word.

Study information

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. The announcement for the next edition is scheduled to take place in January 2025.

Are you thinking about studying the Advanced LL.M. Public International Law? Learn more and watch the videos.

Leiden University’s Master of Laws in International Children’s Rights (LL.M.) looks at human rights laws for children from a comparative perspective.

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…

The main objective of the Telders International Law Moot Court Competition is to challenge students to excel in international law, consequently testing their creativity and powers of persuasion in a friendly competition. Students and academic staff throughout Europe consider participation to be a great…

The Basics and Applications to Plant Sciences will be held physical. See below for more information.

PhD defence

PhD defence

Regulating Relations: Controlling Sex and Marriage

On 12 April 2022 Alok Oak successfully defended a doctoral thesis and graduated.

We are proud to announce that the Advanced Master programme International Relations and Diplomacy has been assessed as excellent by the Accreditation Organisation of the Netherlands and Flanders (NVAO). This is the highest score possible for an educational programme.

Are you thinking about studying Public Administration: International and European Governance? Learn more and watch the videos.

Are you an international student looking for a non-degree programme at Leiden University? Or are you an international staff member, interested in an exchange with Leiden University?

Don Scott De Amicis will give the sixth Hazelhoff Guest Lecture on international development finance: challenges and opportunities.

Violence during war often involves upswings and downturns that have, to date, been insufficiently explained. Why does violence at a particular point in time increase in intensity and why do actors in war decrease the level of violence at other points? Duyvesteyn discusses the potential explanatory variables…

On 26 juni 2018, Claire Achmad defended her doctoral thesis 'Children’s Rights in International Commercial Surrogacy: Exploring the Challenges from a Child Rights, Public International Law Perspective'. The doctoral research was supervised by Prof. Dr. Mariëlle Bruning.

The development of space resource activities is happening now. In the absence of a clear framework to govern these activities, there is a need to examine the concepts that are being discussed in order to ensure that they meet existing treaty obligations regarding on-orbit operations and space resource…

Are you thinking about studying this Advanced LL.M. International Children's Rights? Learn more and watch the videos.

International organisations that represent collaborations between States are becoming increasingly more powerful, and they have an increasing impact on our daily lives. For example, the European Court of Human Rights in Strasburg established that minors have a right to legal aid immediately following…

Political institution (like the Council of the European Union and the European Parliament) generate large bodies of text. These great amounts of text can impossibly be read by a researcher. Contrary to human researchers, computers are able to read thousands of documents a day. In this research project…

Study information

Combine the analytical tools of the Political Science discipline with an in-depth study of current politics in the Netherlands.

On 17 November 2021, Cyril-Igor Grigorieff defended the thesis 'The Regime for International Air Carrier Liability'. The doctoral research was supervised by Prof. P. Mendes de Leon and Prof. V. Correia (University Paris Saclay).

Citizens’s attitudes towards trade are not only about the (perceived) economic effect. Commerce also has a variety of security implications. Employing an original experiment, political scientists Matthew DiGiuseppe (Leiden University) and Katja Kleinberg (Binghamton University) demonstrate that security…

Both good employer practices and good employee practices are open norms. These open norms can lead to uncertainty about what employers should focus on and what rights (and obligations) employees have in that respect. The objective of this study is to give substance to the norm of good employment practices…