How much mortgage interest can I claim back according to law? Or maintenance payments, how much do the tax authorities let me deduct? Many citizens struggle with questions about the application of tax legislation. Roberto van den Heuvel investigated in what way tax legislation should provide clarity…

From ransomware to Citrix traffic jams: over the past few months Dutch organisations were regularly brought to a standstill by serious cyber attacks. We can only face these threats by standing as one, and universities and government should take the lead. These are the words of Leiden professors Bibi…

The long awaited fifth edition of book ‘The Law of the European Union’ (formerly Kapteyn & VerLoren van Themaat) was launched on Friday 11 January 2019 at the T.M.C. Asser Instituut, The Hague.

Prof. Jaap van den Herik was a guest in the latest episode of the Nationale Data Podcast.

The master’s programme in Arts and Culture at Leiden University is uniquely positioned at the intersection of Art History and Museum Studies. Informed by leading interdisciplinary research, this degree provides you with a strong academic foundation for a variety of careers in museums, galleries and…

The master’s programme in Museum Studies at Leiden University is uniquely positioned at the intersection of Art History and Museum Studies. Informed by leading interdisciplinary research, this degree provides you with a strong academic foundation for a variety of careers in museums, galleries and heritage…

Thanks to fanatical lobbying various groups of citizens and traders had a lot of influence on the initial success of the Dutch colony in Brazil. This is the conclusion of Leiden PhD candidate Joris van den Tol, who defended his thesis on 20 March.

Vier leden van het Grotius Centre, Larissa van den Herik, Carsten Stahn, Anna Marhold en emeritus hoogleraar Nico Schrijver, stellen in verschillende media dat de recente aanval op Iran in strijd is met internationaal recht.

What will it be like to study at Leiden University in 2075?

Chemical weapons in the Syrian war, violation of human rights in North Korea and genocide in Myanmar: recent years many United Nations commissions of inquiry published shocking reports. Catherine Harwood studied those commissions and their roles and functions. On November 7 she will defend her PhD d…

Ukraine has filed an innovative claim against Russia at the International Court of Justice (ICJ). Ukraine asked the court to rule that it has not committed genocide and that a war initiated based on a false genocide claim was unlawful. Larissa van den Herik, Professor of Public International Law, discussed…

Experts verwachten een aanpassing in de transferregels, waardoor voetballers meer vrijheid krijgen om een club te verlaten. Een uitspraak in de Diarra-zaak door het Europees Hof van Justitie, wordt binnenkort verwacht en zou tot deze herziening kunnen leiden. Stefan Vandenbogaert, hoogleraar europeesrecht,…

‘It has never been so easy to set up a Studium Generale series.’ With these words Tilman Grünewald thanked speaker Frank den Hollander, who kicked off the Studium Generale series on complex networks on Monday 20 February.

Four Master's students Science Communication & Society made two podcasts on the theme Plastic for the end project of their study programme. With the podcasts, they helped the Institute of Biology Leiden (IBL) to draw attention to plastic pollution. And that was harder than it seemed. 'Be sure to test…

Als vertegenwoordiger behartig je de belangen van promovendi en ReMa-studenten binnen de Onderzoekschool Mediëvistiek. Zo krijg je onder meer de kans om mee te denken over het verbeteren van de onderwijs- en onderzoeksactiviteiten van de onderzoekschool. Interesse? Nog vragen? Neem contact op…

In the Humans of Humanities series, we will do a portrait of one of our researchers, staff members or students, every other week.

In 2020, many of our staff and students have again won prestigious prizes and been awarded important research subsidies.

While the interim ruling passed down by the International Court of Justice did not order a ceasefire, it did state that Israel must take all measures to prevent further victims and genocidal acts in Gaza. South Africa brought the case as it alleges that the war in Gaza constitutes a violation of the…

Het internationaal recht lijkt in het licht van de gebeurtenissen in Gaza onder druk te staan. Het NRC publiceerde een groot artikel waarin zes experts internationaal recht, waaronder Larissa van den Herik, hoogleraar internationaal recht, werden geïnterviewd over de toekomst van de internationale r…

The first generation of Governance of Sustainability master's students has graduated. They received their diplomas during a festive ceremony at Wijnhaven on 17 September. And they will not be the last: The master's programme is only growing in popularity. ‘We are very proud of our first graduates, especially…

A new discovery proves that it matters which approach researchers take in analyzing large physical, social or biological systems that have a networked structure. Ever since the early 1900s, scientists have assumed each approach is equivalent. Now many results in statistical physics may no longer hold.…

The International Court of Justice has issued an interim ruling calling on Israel to take immediate action to prevent genocide. South Africa had accused Israel of violating its obligations under the Genocide Convention, which both countries are a party to. Professor of Public International Law Larissa…

South Africa is suing Israel on charges of genocide in Gaza. The case is being heard at the International Court of Justice in The Hague this week. Professor Larissa van den Herik, an expert in Public International Law specialising in the law on genocide, explains the situation to NOS.

The Persian language and its poetry are intertwined with the history of Central Asia. Although some mediaeval poets were later claimed by an individual state, their influence knew no frontiers. This is what Gabrielle van den Berg, Professor of Cultural History of Iran and Central Asia, argues in her…

How do we create a healthy, inclusive, digital and sustainable society? And how do we keep it that way? If science is to provide answers to these questions, the universities of Leiden, Delft and Erasmus will need to work together. This is what Wim van den Doel, the new figurehead of the LDE Alliance,…

‘There’s so much going on, and it’s hugely interesting.’ Serge Rombouts, professor of Methods of Cognitive Neuroimaging, is describing his new position on the Executive Board of the Institute of Psychology. His appointment as a board member is very new. It is only since February that he has been responsible…

Which teacher knows best how to inspire their students? Carmen van den Bergh (Humanities), Egbert Koops (Law) and Arjan Louwen (Archaeology) have been nominated for the 2025 Leiden Teaching Prize.

In January 2020 the book “Private Enforcement of European Competition and State Aid Law”, edited by Ferdinand Wollenschläger, Wolfgang Wurmnest & Thomas M.J. Möllers, was published by Wolters Kluwer.

What should policymakers and politicians do to prevent violent extremism? What are the greatest risks posed by the radical left and right? How do ideological media publications that terrorists assemble before attacks, may help to counter extremist narratives? About 30 professionals from all over the…

Sonorous phenomena are always on the verge of becoming something else. As it unfolds, sound constitutes spaces, mediates presence, articulates time. Furthermore, it may prompt emotions, generate awareness, organise patterns of behaviour or trigger a sense of belonging. As sound becomes audible, it is…

Analysing the ways in which immigration structurally challenges and changes the organization and conceptual boundaries of national welfare states.