Growing public backlash against international organizations (IOs) and attacks of national political elites on the rule of law increasingly challenge governance by IOs.

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…

The Faculty Board issued these Regulations of the Institute of Philosophy on 9 January 2018.

On Wednesday 13 December 2017 Jaap Wieland defended his doctoral thesis entitled ‘De bescherming van concurrentiebelangen in het bestuursrecht’ (the Protection of Competition Interests in Administrative Law).

Our Master Law in European and International Human Rights Law (LL.M.) looks at the various human rights protection mechanisms from a comparative perspective

Trust in public institutions in the Tata Steel case and beyond

On Thursday 11 May 2017, Qiang Yu defended his doctoral thesis ‘Market Power and Competition Law in the Software Industry’. The supervisors of the research are Professor T.R. Ottervanger and Professor S.C.G. Van den Bogaert. A brief summary of his thesis is provided below.

What are the rights of migrants in Morocco and how do this receiving state and migrants deal with them in practice?

On 14 September, Erik Plas defended the thesis'Material amendments to public contracts in public procurement law'. The doctoral research was supervised by Jan Hebly and Bart Krans.

Dr Anouk Goemans has been appointed professor by special appointment of Youth Services and Child Protection from an Educational and Legal Perspective as of 1 November 2024. This chair is funded by the 'Stichting Steunfonds Pro Juventute' support fund foundation and serves as a bridge between the Department…

On 9 April 2019, Yudan Tan defended her thesis 'The Rome Statute as Evidence of Customary International Law'. The doctoral research was supervised by Prof. dr. W.A. Schabas.

Nine universities in the Netherlands and Flanders participate in the NVIC.

The IBL represents the core of modern biological research at Leiden and we interact closely with the other life science Partner Institutes in the faculty:

The Institute Council consists of scientists, support staff and PhD- and MSc-students. They discuss policies, strategies and other institute matters that may concern any person working or studying at Leiden Observatory.

The 'Leids Papyrologisch Instituut' is the only Dutch institute that studies both Greek (and Latin) and Demotic and Abnormal-Hieratic papyri. The members of our staff publish texts from collections all over the world, including our own collection.

Are you thinking about studying Law and Society? Learn more and watch the videos.

The Mathematical Institute is responsible for the research and education in mathematics and statistics at Leiden University.

Are you thinking about studying European and International Human Rights Law? Learn more and watch the videos.

Are you thinking about studying European and International Business Law? Learn more and watch the videos.

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…

On 8 July 2020, Andres Sarmiento Lamus defended his thesis 'The Proliferation of Dissenting Opinions in International Law'. The doctoral research was supervised by Prof. L.J. van den Herik and Prof. Y.A.A.S. Radi (UCLouvain).

‘Visibility and secrecy are both valuable tactics and should not be antagonized in LGBT movements, ’ says Jingshu Zhu. Zhu defended her dissertation on Wednesday 21 February.

The Institute Council (Instituutsraad - IR) consists of scientists, lecturers, technical support staff and PhD- or MSc-students, all from the IBL. They gather biannually to discuss policies, strategies and other institute matters that may concern any person working or studying at the IBL. These matters…

Jens Iverson, Assistant Professor of International Law and a Researcher in the Jus Post Bellum Project, defended his Ph.D. dissertation on 21 September 2017.

On 21 February 2019, Ruben Zandvliet defended his thesis 'Trade, Investment and Labour: Interactions in International Law'. The doctoral research was supervised by Prof. dr. N.J. Schrijver.

This research studies the future perspectives for Malaysian space law. It aims at demonstrating the development of Malaysian outer space activities inclusive of her status with respect to United Nations space conventions and her membership of international and regional space-related organizations.

On 23 April, Andreas Häuselmann defended the thesis 'EU privacy and data protection law applied to AI: unveiling the legal problems for individuals'. The doctoral research was supervised by Gerrit-Jan Zwenne and Bart Custers.

On 16 April 2021 the webinar ‘Children and young adults in contact with the law: Systemic vulnerabilities and institutional responses’ took place. In total 17 speakers and discussants engaged with the topic of vulnerability.

Read here about the progress that Leiden University is making with regards to sustainability.

On 31 January 2018 Vestert Borger defended his dissertation entitled ‘The Transformation of the Euro: Law, Contract, Solidarity’. The dissertation has been written under the supervision of Professor Stefaan Van den Bogaert (supervisor) and Dr Jorrit Rijpma (co-supervisor).

Questions of justice are not only the concern of legal professionals, politicians and activists, they also permeate culture at large. Literature, Cinema, Music and Artworks often revolve around questions about rights, justice and fairness, raising a wide range of issues, such as: how do we understand…

The central question is whether the current regime of international humanitarian law governing the conduct of hostilities in armed conflict is still adequate to deal with modern conflict scenarios, or whether it needs revision or amendment.

History is being taught at Leiden University since the days of Justus Lipsius [1547-1606]. In 1860, following the appointment of Robert Fruin as Leiden professor of Dutch History, modern historical investigation started in the Netherlands.

The CML Institute's Council (IC) consist of seven persons representing staff and students who are working in our institute. The council advises the management team on a broad range of topics that concern all CML staff members: financial matters, research programs, education and strategic outlines.

Mathematics forms the basis of many innovations in technology, the service industry and science, such as data analysis and coding, artificial intelligence, weather or climate change modelling or understanding molecular processes. The researchers from the Mathematical Institute (MI) are constantly developing…

The Netherlands Institute in Turkey (NIT) conducts scholarly research and supports the academic study of Turkey through the ages. The institute is closely affiliated with University’s Faculty of Humanities. Its facilities are available to students and staff of all universities in the Netherlands.

Contact the Leiden University Institute for History.

The combination of global questions and a wide range of local sources characterizes the Leiden University Institute for History.

Is the legitimacy of law and governance of multilevel jurisdictions diminishing? What is the significance of (diminishing) legitimacy for the effectiveness of law? These kinds of questions about the legitimacy of the supranational formation of law, its application, and the policy and governance based…

The motto of the Institute for History is: ‘Global questions, local sources.’ Its researchers use local sources to find answers to major historical questions. Without historical analysis, it is impossible to understand and explain the issues in society today. Leiden itself has a rich history, with big…

This study focuses on violence involving juveniles in conflict with the law who are deprived of their liberty in different institutions within the framework of the (juvenile) criminal justice system (inter alia, police detention, pre-trial detention and deprivation of liberty after conviction or sen…

The Institute of Public Administration studies the complex problems facing the public sector in the 21st century, from climate policy to the effects of digitalisation. Its researchers analyse, explain and help come up with solutions to the challenges of society today.

Morocco and the Netherlands have a strong bond. The modern community of Dutch people with Moroccan roots is part of a shared history spanning four centuries of social and academic exchange. As an institution that functions at the heart of Moroccan society and the university system, the Netherlands Institute…