This dissertation examines the European Union’s response to the growing problem of disinformation. It uses this case to critically analyse how societies interpret and manage information challenges such as ‘fake news’ and propaganda.

Terrorist attacks are not an end in themselves, but a means of creating unrest and fear. Terrorism policies and research should focus more on managing fear and social unrest.

In this article, Jeanine de Roy van Zuijdewijn and Edwin Bakker provide a big picture reflection on two decades after 9/11 in Western Europe.

An interview with Assistant Secretary General for Emerging Security Challenges David van Weel, and NATO Secretary General’s Special Representative for Women, Peace and Security (WPS) Clare Hutchinson

On Saturday 15 February 2020, the Leiden University Thesis Prizes were presented during the Dies celebration day for alumni. Joint first prize went to Vincent Peeters, who was awarded a cum laude master's degree in Criminal Law and Criminal Procedure in August 2019.

This report examines the questions

The Farm to Fork Strategy seeks to transform the EU food system towards greater sustainability. To do this, Vincent Delhomme argues, some of the traditional concepts and doctrines in EU internal market law need to be challenged and rethought.

This paper examines the need and possibility for developing online resilience-based approaches in response to COVID-19 vaccine conspiracies, often linked to the far right.

Vincent Delhomme delivered a keynote speech on the topic of food affordability at the European Parliament in Strasbourg, on 22 January 2025. The event focused on achieving a balanced food system that is sustainable, healthy, and affordable.

Front-of-pack nutrition labelling, origin labelling, regulation of voluntary green claims made by food business operators: the EU is currently looking into various reforms of the legal framework for food information to consumers. The goal: healthier and more sustainable diets.

In 2010, the remnants of a 16th century indigenous village were discovered in St. Vincent, on the construction terrain of the new International Argyle Airport.

The newly created European Law Unbound Society (ELU-S) held its inaugural conference on 25-26 September 2025, at the Charles University in Prague. Vincent Delhomme presented a paper and chaired a panel, both dealing with contemporary challenges in EU internal market law.

Vincent Bakker, PhD Candidate at the Department of Economics, was awarded the Research Master’s Thesis Prize 2017 of the Faculty of Social and Behavioral Science.

Ragazzi, ‘Suspect community or suspect category?‘, Journal of Ethnic and Migration Studies

Nobody is better qualified to tell you what it is like to work at Leiden University than the employees themselves. Watch the videos and meet your future colleagues. They will be happy to share their experiences with you.

On 8 March 2023 Helen Duffy, Professor of International Human Rights and Humanitarian Law in Leiden, published a monograph on Global Trends in Counter-terrorism and the Implications for Human Rights in Africa.

What is the current relevance of the ethics of counterterrorism and what is the added value of ethics support within the practice of counterterrorism?

This paper contributes on an increasing body of work on radicalisation. It specifically focuses on what distinguishes individuals whose behavioural radicalisation includes involvement in terrorist violence from those whose behavioural radicalisation does not.

In this publication, the authors explore the reality of accessing and interviewing hard-to-reach populations such as extremists and terrorists

Is online radicalisation is an analytically useful concept when discussing contemporary cases of terrorism?

This article presents an in-depth evaluation of a specialized reintegration initiative within the Dutch Probation Service focused on individuals convicted or suspected of involvement in terrorism.

This article researches the public perception of terrorist attacks by measuring the importance the public assigns to attributes of terrorist attacks.

This article presents the findings of an explanatory study into the perceptions of Dutch Muslims in The Hague concerning pre-emptive counter-extremism and de-radicalisation policies.

In this article, Bart Schuurman and Sarah Louise Carthy conduct further research into the understanding of the causes of terrorism by assessing differences and similarities between left-, right- and jihadist extremists and terrorists. The article draws on the Analysen zum Terrorismus, one of the most…

The study by Tahir Abbas and Liselotte Welten reveals a structural and nuanced understanding of how the question of Salafism in the Netherlands has become an increasingly discussed phenomenon and the types of threats that ought to give genuine concern to security, intelligence and policing services.

In this article, Tokdemir & Klein examine the strategic actions of governments against domestic terrorist groups and domestic terrorist groups’ reactions to such actions.

This book contextualizes the use of terror as part of wider movements of political contention, demonstrating that terroristic innovation occurs as part of wider historical processes rather than in a vacuum.

Prof.dr. Vincent van Heuven has been appointed as a member of the Royal Academie of Dutch Sciences (KNAW).

On 1 and 2 December 2022, Vincent Delhomme and Carina van Os participated (Europe Institute) in the workshop ‘The European Health Union - Setup, challenges and global outlook’, held at the Max Planck Institute for Comparative Public Law and International Law in Heidelberg. Vincent had the opportunity…

On 19 October 2023, Vincent Delhomme spoke at the conference on ‘European Judicial Narratives’, hosted by the University of Louvain Saint-Louis in Brussels. Vincent participated in the panel devoted to the reception of these judicial narratives in the European legal epistemic community.

On 26 October 2023, Vincent Delhomme spoke at the inaugural conference of the newly founded ICON-S Benelux Chapter, hosted by Maastricht University. The overarching theme of the conference was 'Crises, Challenges, and the Future of Public Law'. Vincent participated in the panel on ‘The challenges of…

This research sets out to answer the following questions:

It is always a pleasure when a young academic can reach out to the broader public and discuss his/her research's societal relevance and impact. Our own Vincent Walstra has been doing very well on disseminating his work and featuring in various media. This is a list of his recent publications and int…

In this blog post, Linda Slapakova discusses the various roles that AI plays in counter-disinformation efforts, the prevailing shortfalls of AI-based counter-disinformation tools and the technical, governance and regulatory barriers to their uptake, and how these could be addressed to foster the uptake…

In the EU Law Live podcast episode ‘Tax, gambling and the internal market’, Vincent Delhomme discusses the recent Admiral Gaming Network case, dealing with the validity under EU free movement provisions of national tax measures in the field of gambling.

The question of how military interventions can best transition to a long term counter-terrorism policy forms the core research question of three interlinked reports. This research project has been completed with support of NATO’s Science for Peace and Security Programme. Leiden University researchers…

Assistant professor Vincent Chang spoke in various media outlets about the Chinese commemoration of World War II.

In an article for East Asia Forum, University Lecturer Vincent Chang sheds light on China’s ambition to globalise its pantheon of national heroes.

This one-year, English-taught Master's programme offers insights on general developments as well as the specific challenges in the field of the governance of crisis and security, with in-depth knowledge of sub-fields of crisis and security management.

During this award ceremony for alumni op Saturday, 10 February 2018, Vincent Bakker was awarded second prize in Leiden University’s 2018 Thesis Award. These prizes are made possible by the Minerva Reünisten Fund Year 1957/1961/1965, incorporated into the Leiden University Fund (LUF). His thesis supervisors…

On 10 February 2025, Vincent Delhomme attended the official launch of the new EU Health Union Fellowship at the College of Europe (Bruges), where he delivered a two hour lecture on EU health governance.

On Friday 2 June 2023, Vincent Delhomme, Assistant professor at the Europe Institute at Leiden Law School, successfully defended his PhD thesis entitled : ‘Regulating lifestyle risks in EU law: Promoting health in a diverse market’.

The second and final report on the Netherlands‘ crime-terror nexus has analysed all fourteen profiles of individuals arrested in 2015 for offences of terrorism.

Vincent Bakker has won the 2017 Thesis Prize of the research master’s programme Political Science and Public Administration. His study of labour market effects of social investment policies is the crowning achievement of Bakker’s work as a MSc student. It also marks the start of his academic career.…

Have you ever wondered what your choices would be, facing a major crisis? Had your thoughts about the course of action taken bij authorities, media, law enforcement or the public in the wake of a terrorist attack?

Kuba funerary art from the Congo River Basin

Leiden University endorses inclusiveness and diversity. It is open to all those who wish to study or work here, and to develop their full potential. The University is an open community where everyone who wants to contribute to its ambitions and to all that it stands for will feel at home and have equal…

The book addresses the question “How and why do people become involved in European homegrown jihadism?

It is in the interest of all democracies for young people to learn the value of free debate, even on sensitive and potentially divisive issues like terrorism, argue Thorbjørn Jagland (secretary general of the Council of Europe), Sayeeda Warsi (UK parliamentarian), and Francesco Ragazzi (Institute of…