China is conducting joint military exercises this week with Cambodia, Laos, Malaysia, Thailand, and Vietnam. In doing so, it is seeking to strengthen military ties with the ASEAN Member States amidst growing US presence in the region.

Lecture

Following an investigation into plagiarism, Erasmus University Rotterdam has declared the master’s thesis of Dutch State Secretary for Long-term and Social Care, Vicky Maeijer, invalid. Wim Voermans, Professor of Constitutional Law, spoke to Dutch newspaper ‘Trouw’ about the matter.

The overlapping of intergovernmental organizations sharing Member States is one of the key challenges for achieving effective regional integration.

On 7 and 8 July 2016 the T.M.C. Asser Instituut and the Law Faculty of Leiden University organise a two-day symposium on EPPO.

A growing amount of literature is being devoted to interrogating gendered dynamics in both violent extremism and terrorism, contributing to the integration of international and feminist security. This includes how such dynamics can shape differences in the motivations and participation of women and…

This report concerns itself with terrorist technical innovation, particularly with regards to terrorists’ incorporation of emerging technologies into their practices. More specifically, it investigates, through the elaboration of a theoretical learning framework, how terrorist groups can adopt the practices…

In this article, Ben de Jong, research fellow at the Institute of Security and Global Affairs, examines the relationship between double agents and their handlers.

On 5 June, Maarten Aalbers defended the thesis 'The balancing of general interests in EU State Aid Law: blurred lines between the prohibition and the compatibility of aid'. The doctoral research was supervised by Pieter van Cleynenbreugel and Stefaan van den Bogaert.

The Hague Diplomacy Podcast aims at bringing the themes of the journal's research off the page, and onto the discussion table. Each episode will feature a guest who will share their insights and personal experience within their practice of or research on diplomacy. Available via SoundCloud, Apple Podcasts…

The US travel restrictions are deeply regrettable. Support will be offered to students and staff who are affected.

Political scientist Ruud Koole (Institute Political Science, Leiden University) has been appointed to a state commission that will investigate whether the Dutch parliamentary system and the parliamentary democracy need to be reformed.

From 26 to 30 June 2017 a summer course on Europeanisation of administrative law in the Member States of the European Union will be held by the Department of Constitutional and Administrative Law.

This month Johan Christensen, assistant professor at the Institute of Public Administration, published his new book: ‘The Power of Economists within the State’. The book explores four countries, Denmark, Ireland, Norway and New Zealand and analyses why these similarly sized and wealthy countries have…

On 22 June 2018, Prime Minister Rutte announced that Jaap de Hoop Scheffer, Professor of International Relations and Diplomatic Practices at the Institute of Security and Global Affairs (ISGA), together with former ministers Sybilla Dekker and Winnie Sorgdrager, will become Minister of State.

Vera van Noort, professor in Computational Systems Biology at the KU Leuven (Belgium), is appointed holder of the rotating chair “Van der Klaauw Professor” for the year 2015-2016 at the Institute of Biology. Holders of the chair bring inspiring research and teaching in theoretical biology to the University.…

On 19 February 2019, Mirjam Sombroek-van Doorm defended her thesis 'Medisch beroepsgeheim en de zorgplicht van de arts bij kindermishandeling in de rechtsverhouding tussen arts, kind en ouders'. The doctoral research was supervised by Prof. dr. A.G. Castermans en Prof. mr. C.J.J.M. Stolker.

A particular group of counter protesters have been sighted at numerous Black Lives Matter protests that were held in the United States. An extreme right movement known for its characteristic Hawaii Shirts and heavy weaponry that calls itself the Boogaloo Boys. Which is cause for concern among the American…

In general, there are significant health disparities between people with low and high incomes, particularly in countries with an extensive welfare state like the Netherlands. PhD candidate Janna Goijaerts researched how the organisation of the welfare state affects the health of vulnerable people.

Residents of Bonaire believe the Dutch government should do more to combat climate change on their island. On their behalf, Greenpeace is taking the Dutch State to court. External PhD candidate Sjoerd Lopik discussed the case on Dutch Radio 1.

Met groot plezier heeft de Universiteit Leiden van 1 tot 4 november het X Congreso Internacional de la Asociación de Hispanistas del Benelux (AHBx) georganiseerd, met het thema Transhispanismos: contactos y contagios (Transhispanismes: contact en besmetting). De AHBx is een platform in de Benelux dat…

Nico Schrijver professor emeritus in Public Law and State councillor at the Council of State has been appointed by the European Union and the United Kingdom as a member of the Arbitration Panel which is authorised to settle disputes on the EU-UK Withdrawal Agreement.

Unmanned aerial vehicles (UAVs), often referred to as drones, have become easy and inexpensive to buy, and it is generally expected that the use of drones by private individuals, businesses and public authorities will increase tremendously in the coming years. This raises questions as to what is technologically…

On 9 April 2020, Mohamed Azizi defended his thesis 'Reflecties op Wereldburgerschap: In de spiegel van Afghanistan en Nederland'. The doctoral research was supervised by Prof. P.B. Cliteur en Prof. W. Veugelers (Universiteit voor Humanistiek).

On 1 October 2020, Arianne de Leeuw defended her thesis 'Scheiding van zeggenschap en belang in de familiesfeer'. The doctoral research was supervised by Prof. F. Sonneveldt and Prof. A.O. Lubbers.

Bij de Universiteit Leiden zet onze Onderzoeksgroep violence and violence prevention zich in voor het bevorderen van kennis en begrip op het gebied van geweld en geweldpreventie door middel van interdisciplinaire wetenschappen en innovatieve methodologieën. Onze faculteitsleden zijn toonaangevende…

On 7 March 2019, Maria de Jong-de Kruijf defended her thesis 'Legitimiteit en rechtswaarborgen bij gesloten plaatsing van kinderen'. The doctoral research was supervised by Prof. mr. M.R. Bruning en Prof. mr. T. Liefaard.

On 30 June 2021, Thijs Beumers defended his thesis 'De bescherming van immateriële contractuele belangen in het schadevergoedingsrecht'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. W.H. van Boom.

On 24 April 2025, political scientist Pawan Kumar Sen will defend his PhD dissertation,

About the book

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

Political scientist Nicolas Blarel (Leiden University) analsyses how non-state actors can (directly or directly) attempt to provoke conditions for a crisis between state actors that have nuclear capabilities. He argues that there is an urgent but complicated and understudied task to understand and manage…

The crisis in Iran seems to have settled and both countries are claiming victory. The Americans say that they taught Iran a lesson, but Iran projects the contradictory. Now, who is right? On Thursday 9th January, Bert Koenders commented on this on BNR News Radio.

In November 2022, at the request of the House of Representatives, the Dutch Government established the State Commission on the Rule of Law.

Promotor: Prof.dr. E. R. Eliel, Co-Promotor: M.J.A. de Dood

The rise of populist parties, the expansion of the role of the state and now the fragmentation of the Senate and the House of Representatives: Dutch political reality has changed rapidly over recent decades. These developments are in stark contrast to Dutch constitutional law that has remained almost…

Individual traders should be at the forefront of the study of early modern world trade rather than institutions such as states and companies, argues Professor of Global Economic Networks Cátia Antunes. Inaugural lecture on 9 June.

In this new edition of the Rijmbijbel there are 159 valuable miniatures, combined with commentary by MA-students from Utrecht. Students in Dutch Language at the universities of Antwerp and Leiden have translated the text passages. Various experts, such as Martine Meuwese (UU), tell more about Jacob…

Four years of protracted negotiations and bitter warfare passed between the declaration of Indonesian independence on 17 August, 1945, and the official transfer of sovereignty on 27 December, 1949.

On Thursday 24 May 2018, Tanja Masson-Zwaan of Leiden University’s International Institute of Air and Space Law and Prof Mahulena Hofmann of the University of Luxembourg had the honour of addressing the King and Queen of the Netherlands and the Grand-Duc and Grand-Duchess of Luxembourg during the State…

How can we understand the encounter between communities active in sustainability initiatives and governmental agents at the multiple institutional layers in the Netherlands?

State Secretary Sander Dekker of Education, Culture and Science received the national research agenda Nature4Life on 31 January. This research agenda, in which Leiden University is involved, focuses on research on biodiversity, ecology and evolution.

Op 9 juni jl. vond in de rechtenfaculteitskamer van het Leidse Academiegebouw een workshop plaats over tradities en aanpalende concepten, zoals politieke cultuur, spelregels en constitutionele conventies. Tijdens de bijeenkomst presenteerden en bediscussieerden juristen, historici, politicologen en…

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.

This dissertation presents the results of the importance of creativity for ICT-students of Dutch universities of applied sciences (in Dutch: hogescholen), and the functioning of training courses that aim to promote creative abilities is highlighted.

Riese presented on 3 December 2018 the reason of state as the preservation of the state through exceptional measures.

Tom Long (2022). A Small State’s Guide to Influence in World Politics. Oxford University Press. ISBN: 9780190926212, 240 pp. (hardback), £19.99.

A PhD candidate from the Van Vollenhoven Institute, Maryla Klajn, was recently invited as one of the speakers to the 'Unwanted Citizens of EU Member States’ conference, which took place in Liverpool on August 27th, 2019.