Vincent van Heuven passed away unexpectedly on Friday 6 February 2026 at the age of 76 at his home in Kûbaard (Friesland), the Netherlands.

Recently, Engin Yüksel gave a lecture on Russian military concepts from 1853 to the present day and his observations on the Russo-Ukrainian war at the Faculty of Humanities, premised on his recently completed doctoral research.

From 26 to 28 May, second-year students of the Advanced MSc International Relations and Diplomacy (MIRD) participated in the programme's annual visit to Geneva, Switzerland.

The Covid-19 pandemic has challenged political leaders worldwide, bringing discussion about leadership in times of crisis. In various media outlets, a recurring topic has been the relationship between the gender of a country’s leader and the success of his or her Covid-19 approach. Especially female…

Mojan Samadi obtained her PhD in 2020 in Leiden and has since remained at the university as an assistant professor. Her research currently focuses on gender and criminal law, with a key question being how criminal law should address femicide.

Leiden researchers Max van Duijn (Leiden Institute of Advanced Computer Science) and Vasilika Kosta (Leiden Law School, Europa Institute) will join The Young Academy (Royal Netherlands Academy of Arts and Sciences) KNAW)).

Eline van Slijpe wrote her Master of Philosophy thesis on intergenerational justice: does the current generation have obligations towards future generations? With this thesis she won the biannual J.C. Baak Prize.

Voormalig demissionair staatssecretaris van Fiscaliteit en Belastingdienst Marnix van Rij gaf op 17 juni in samenwerking met universitair docent Esther Huiskers-Stoop een gastcollege over belastingrecht en duurzaamheid. Deze lezing werd op initiatief van student Darya de Wilt georganiseerd.

At the end of February, we had the PhD Introductory Course on Drug Research for starting PhD candidates from LACDR. This 3-days event took place at Castle Oud Poelgeest, a great location to be completely out of the work environment. We welcomed 30 PhD candidates, with whom we had an inspiring and…

Education, Research

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.

Due to the great influx of PhD candidates, we had the pleasure to organize a 2nd PhD Introductory Course on Drug research this year. From November 4- 6, we welcomed 30 participants for this 3-days event, which took place at Castle Oud Poelgeest.

Kimia Heidary and Helen Pluut received the Best Paper Award at the Munich Summer Institute for their paper on consumer perceptions and personalized pricing.

Kimia Heidary and Helen Pluut received the Best Paper Award at the Munich Summer Institute for their paper on consumer perceptions and personalized pricing.

'Engaging With Everyday Sounds' is a rich and inspiring exploration of the role of sounds in everyday life, including their impact on human actions, emotions, and imagination. Marcel Cobussen intertwines sonic studies with philosophy, sound art, sociology and more to create an impressively lucid and…

Many deepfake porn videos are going around appearing to feature popular Dutch presenters, actors and politicians. These videos are banned, and yet they’re still being circulated. Dirk Visser, Professor of Intellectual Property Law, explains why: ‘There are enough rules telling us that deepfakes aren’t…

The euro crisis of 2010 has shown that the Eurozone lacks economic cohesion and that EU fiscal integration is needed for a stable euro. But can this integration exist without clashing with the national constitutional interests of the Member States? Frederik Behre looked into this matter in his PhD-thesis…

Can politicians say whatever they want? What is the limit and when can the Public Prosecution Service act? PhD candidate Jip Stam examined the limits of free speech in criminal law. 'Intervening too soon can threaten democracy and the rule of law,' he warns.

‘Children’s rights are somewhat of a poor relation’, says Professor of Law and Health Mirjam Sombroek-van Doorm. In her inaugural lecture, she will emphasise how more attention needs to be paid to children’s rights in current thinking on law and health.

Grotius Dialogue

Lecture

In the Netherlands it is now possible to visit non-essential shops if you make an appointment beforehand. But when you book an appointment you have to provide a lot of personal data. Are shops allowed to ask you for all this data and what happens to it?

Dr. Vanessa Newby (ISGA) and Dr. Catherine Jones from St Andrews won a grant worth over €23.000 from the RSE Saltire Facilitation Network Award entitled: ‘Worse Things Happen at Sea’: The Governance & Security of the Ocean. The grant will comprise three workshops in 2022: one in Leiden, one in Edinburgh…

Dr Mamadou Hébié, Associate Professor of International Law at the Grotius Centre for International Legal Studies, served last week as legal counsel in the world’s first advisory proceedings concerning climate change before the International Tribunal for the Law of the Sea (ITLOS), on the one hand, and…

The democratic rule of law is under pressure due to a series of scandals and integrity issues, as seen in the recent parliamentary inquiries. Professor Ronald Kroeze explains: 'Public office holders are expected to show complete dedication, but that norm is quite absolute, and what we mean by it is…

More people seeking asylum, overcrowded asylum accommodation and asylum procedures that take years because of a lack of capacity. The current government wants to declare an asylum crisis but what is that exactly and can they just do that?

In the online panel discussion of ESOF 2022 ‘The effect of the online world on adolescents’, together with Amy Orben, Professor Eveline Crone, Sterre van Riel, Professor Anne-Laura van Harmelen and Professor Jan Sleutels, Professor Ton Liefaard shared his research on adolescents and the online world…

A new Senate (Eerste Kamer) has been elected in the Netherlands and the current government coalition has lost its majority. The majorities in both the Senate and the House of Representatives (Tweede Kamer) have not been this far apart for quite some time. High time to merge both chambers, argues Wim…

Opportunities and challenges of digitalisation, the platform economy, and flexibilisation of European labour markets.

In some cases, PhD candidates are permitted to follow a PhD track that involves conducting research and receiving supervision at two institutions: Leiden University and another university. On this page, you can read what forms of agreement there are.

Can you account for all the information and data in your possession? How do you deal with personal information? What do you do if there is a data breach? How do you save your data and are you aware of the regulations you need to adhere to while doing so? Where do you go if you are having ICT problems…

The Public Prosecutor's Office (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases for genealogical research in criminal investigations. The method could be used in serious criminal cases that have stalled and it is already being used in investigations abroad. Whether…

On the 1 June 2021, Professor Eric De Brabandere and Dr Daniel Peat of the Grotius Centre for International Legal Studies of Leiden Law School launched the Leiden Investment Treaty Arbitration Database.

PhD defence

Grotius Dialogue

The Dutch asylum application centre in Ter Apel is overburdened, an issue that is currently a prominent feature in the Dutch media. In podcast De Verbranders, PhD students Neske Baerwaldt and Wiebe Ruijtenberg engage in dialogue, and use different angles to examine themes related to migration, borders…

Different groups can have different memories of the same historical event. This can lead to conflict but does not have to. How is this, and how can countries and people reconcile with the past?

PhD defence

Lecture, European Union Seminar

Lecture

Research

In the confrontational ‘House of Misconceptions’, visitors put themselves in another person’s shoes and have to justify their existence. The performance is the result of a unique collaboration between the Liquid Society art collective and Professor of Law and Society Maartje van der Woude and her st…

The team from Universidad de los Andes (Bogotá, Colombia) came out on top at the international online Moot Court organised by Leiden University and law firm Baker McKenzie.

In a speech on Keti Koti the Dutch king, Willem-Alexander, apologised on behalf of the royal family for the Netherlands’ historical role in slavery. What is the significance of this?

Tahir Abbas, Professor of Radicalisation Studies at the Institute of Security and Global Affairs, is organising a book launch for his new book: 'Ruminations: Framing a sense of self and coming to terms with the other'. The book launch will take place on Thursday 15 December from 16.00-17.00 hrs. at…

On 8 December, in honour of Human Rights Week, Roeland Böcker gave a public lecture about his experiences as ambassador to the Council of Europe. Between 2017 and 2021, Roeland Böcker was the representative of the Netherlands in the Council of Europe.

The Dutch conservative VVD party plans to make the right to family reunification more difficult for people with temporary residence permits. In Germany, this restriction led to several lawsuits which were won by status holders. Mark Klaassen, Assistant Professor in Migration Law, believes this is a…

The Dutch cabinet will allocate a total of 40 million euros extra for institutions providing youth protection and youth rehabilitation over the next four years. Local councils must make the same amount available. Will that be enough to solve the problems?

The Dutch Public Prosecution Service (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases in an effort to solve deadlocked murder cases. Bart Custers, Professor of Law & Data Science at eLaw, Center for Law and Digital Technologies, expects that this is permissible from…

Ludo Waltman, professor of Quantitative Science Studies at Centre for Science and Technology Studies (CWTS), has been awarded the Derek de Solla Price Medal.