Security and safety challenges are at the top of the list of the most pressing issues of contemporary society.

On 3 and 4 March, the 2nd Doctoral Seminar on International Criminal Law, International Human Rights Law and International Humanitarian Law was held at the Siracusa International Institute for Criminal Justice and Human Rights in Sicily. Ida Asscher and Anna Smulders, both PhD Candidates at the Grotius…

Tobias Müller, post-doctoral researcher in the field of Terrorism and Political Violence at ISGA, writes how together, religious groups and scientists can be a powerful force for a liveable planet.

Do children growing up in a jihadist or right-wing extremist household develop the same extremist views as their parents?

At the beginning of March 2020, the Dutch Taskforce for Applied Research (SIA) awarded Daan Weggemans of the Institute of Security and Global Affairs a research grant. The Taskforce is part of the Netherlands Organisation for Scientific Research (NWO).

Research is at the heart of a solid security policy. That’s why researchers from Leiden are analysing the motives of radicalised people and the biggest risks surrounding digital activity. Read more about their work in the research dossier ‘Security and Threat’.

On Tuesday 10 September 2019, the opening of the Master European Law took place in the Old Observatory. Ms Catherine De Bolle, Europol Executive Directeur, presented the opening lecture.

Young people being deployed to carry out explosive attacks: how do they come into view, and what motivates them? The podcast 'Action/Reaction: From Attack to Approach' by the research project Close Protection and Surveillance and researcher Sheila Adjiembaks takes a closer look at why and how young…

The imprisoned leader of the Kurdistan Workers’ Party (Partiya Karkerên Kurdistan, PKK), Abdullah Öcalan, called for a peace settlement between Turkey and PKK on 28 February 2015.

PhD-student Nikki Sterkenburg studies far-right extremist groups. But how does she get in touch with these groups? And what do you do if you stumble upon illegal activities? She explains in our podcast series (in Dutch).

Leiden University mourns the victims of the terrorist attacks in Brussels. These attacks are an assault on our democratic society. We will continue to defend our European values of freedom and tolerance against all attempts to undermine them.

‘We want to say something very different from the norm. We are the radicals now.’ Tahir Abbas is lyric about the DRIVE project he will be leading from Leiden University in The Hague. This is a short introduction to the research that will be carried out in the Netherlands, Denmark, Norway and the United…

Explosions at people’s homes, gangland killings and online threats: if you follow the news, it may seem as though threat levels in the Netherlands are rising. But is that really true? Researchers from Leiden University investigated this and have presented their results in the Dreigingsmonitor (Threat…

Within just a few years, the Chinese government's policy towards the Uyghurs deteriorated sharply. From control and marginalisation, it shifted to violation of human rights. PhD candidate Elke Spiessens was right in the middle of it with her research. 'The fabric of the community is being completely…

On Monday 21 November a lecture was given at Leiden Law School of Leiden University by Belgian Minister of Justice Koen Geens and Dutch Minister of Justice and Security Ard van der Steur in which they talked about international judicial cooperation. The lecture focussed on cooperation between the Netherlands…

Researchers from five different discplines work together in this interdisciplinary initiative.

Below you will find an overview of all PRE-Classes provided by the various programmes of Leiden University. For each section, you can find a description of the content and more specific information about the requirements for participation in the Class.

To understand which groups turn against their government, you need to understand the political culture in which they grew up, what they expect from a ‘state’ and what alternatives there are. With its long interdisciplinary experience, ASCL is often considered to be a regional expertise centre. But this…

An exploratory study on the role of family members of those who joined jihadist groups

Together Leiden University, Delft University of Technology and Erasmus University Rotterdam form the strategic alliance Leiden-Delft-Erasmus Universities.

Featured Reviews published on the HJD blog offer an accessible platform for scholars and practitioners to share reflections, spark dialogue, and highlight innovative ideas shaping the study and practice of diplomacy.

What are the institutional dynamics of the adoption of internal market legislation?

From 16 to 23 October 2025, the Faculty of Governance and Global Affairs (FGGA) will host the second edition of Cyber Week. Following last year’s success, we will once again shine a daily spotlight on our teaching and research in the field of cybersecurity through LinkedIn and Instagram. Today’s societal…

From 16 to 23 October 2025, the Faculty of Governance and Global Affairs (FGGA) will host the second edition of Cyber Week. Following last year’s success, we will once again shine a daily spotlight on our teaching and research in the field of cybersecurity through LinkedIn and Instagram. Today’s societal…

Your tuition fee depends on a number of factors, such as your nationality and your previous Dutch higher-education qualifications.

With our research and teaching, we help make the world a better place. We join in the academic and public debate, and seek answers to economic and social issues – not just at the local and regional level but at the global one too.

Are you interested in the minor Global Affairs? Find out more about admission and application below.

Liesbeth van der Heide, Education and Research Staff Member at the Institute of Security and Global Affairs (ISGA), wrote on 20 April in the American news publication, Foreign Policy about the March’s deadly massacre in Mali, which exposed the lack of progress since the country’s peace accords. Furthermore,…

In totaal hebben 21 Leidse onderzoekers succesvol een aanvraag ingediend voor de NWO SGW Open Competitie XS. Twee van de beloonde projecten komen van onderzoekers van FGGA: Silvia D’Amato en Jaroslaw Kantorowicz.

On Monday 29 April, Liesbeth van der Heide, researcher at the Institute of Security and Global Affairs of Leiden University, was a guest on the Dutch television programme ‘Nieuwsuur’. She reflected on the interview with Jason Walters, a former member of the Dutch Hofstad terrorist group. The ‘Hofstad…

Zijn corona-complotten waanzin? Jelle van Buuren, universitair docent bij het Institute of Security and Global Affairs van de Universiteit Leiden, discussieert in de online talkshow De Groene Live #25 vanuit Pakhuis de Zwijger over dit thema.

On Friday 14 June 2019, the second young researchers workshop was held within the framework of the Jean Monnet Chair on Mobility and Security in Europe. It was followed by an expert round table organized in cooperation with the Centre for the Law on EU External Relations (CLEER) of the Asser Institu…

Professor of Law and Society Maartje van der Woude (37) is one of the four young scientists who have been awarded a 2018 Heineken Young Scientists Award. Van der Woude is receiving the award in the field of Humanities for her research on the interplay between law and the public debate on such themes…

Radical books on Islam glorifying armed jihad and humiliating Jews and Christians are available in the Vught prison library.

Tahir Abbas, Professor of Radicalisation Studies at the Institute of Security and Global Affairs, organised a book launch for his new book: 'Ruminations: Framing a sense of self and coming to terms with the other'. The book launch took place on Thursday 15 December at Campus The Hague.

Jelle van Buuren, Assistant Professor at the Institute of Security and Global Affairs at Leiden University, can be heard in the latest Podcast of Wetenschap.nu.

Researchers from Leiden University have investigated the living conditions of Dutch fighters in Syria. Their report is central to a panel discussion on Tuesday, 24 May.

Quirine Eijkman, terrorism expert at the Institute for Security and Global Affairs, talked about the attack in Manchester.