With the recent rise and fall of IS, academics and policy makers around the world are expressing concerns about the fate of children of former foreign fighters. Will they follow in their parents’ footsteps? In this paper, Layla van Wieringen, Daan Weggemans and Marieke Liem argue that in light of this…

In the track Governance of radicalism, extremism and terrorism you will be familiarised with the academic debate regarding these contested concepts.

Are you thinking about studying Crisis and Security Management: Governance of radicalism, extremism and terrorism? Learn more and watch the videos.

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: Prof. dr. B. de Smit

The group structure of Jihadist networks changes rapidly, which makes it difficult to monitor them. This is the finding of research by criminologist Jasper de Bie. PhD defence 14 April.

This book presents an understanding of the concept of Countering Violent Extremism from a critical terrorism studies perspective using case studies from different countries while examining the issues it raises.

Right-wing ideology is a dominant force in Israel today. Between 2009 and 2021, and again since 2023, Likud-led governments headed by Benjamin Netanyahu consolidated their vision for the country’s identity and its place in the Middle East. Radicalized Conservatism in Israel presents this vision’s ideological…

Sub-Saharan Africa has seen a significant rise in terrorist acts and radicalized youth since the appearance of Boko Haram in 2009 and the fall of Libya in 2012. This book investigates the deeper layers of radicalization in Sub-Saharan Africa, which is situated in a larger global tendency.

In this article, Bart Schuurman and Sarah Louise Carthy explore the distinctions between radicalised individuals and the general population

On Monday 11 September, Matthew Hoye presented an early draft of a grant proposal on 'Remittance, Paradigms, and Extreme Cases' during a GTGC lunch seminars.

This research paper seeks to examine the nature of the nexus between right-wing extremism and the military by surveying five potential consequences (i.e., problem areas) arising from the presence of right-wing extremists within the armed forces of twelve Western countries.

Research goal: To support the design of technologies (counter-measures and communication measures) for the prevention, interdiction and mitigation of lone actor extremist events (LOEEs), which are hard to anticipate, yet can be highly damaging to local and national communities and therefore must be…

What are the mechanics of soft materials (e.g. foam, sand)?

Investigating neurobiological endophenotypes of Social Anxiety Disorder

Innovation plays an essential role in firms' competitiveness and long-term success. It varies from different types, ranging from run-of-the-mill innovation that brings incremental changes to existing technologies to radical innovation that breaks from existing trajectories.

Why does one person radicalize to involvement in terrorist violence within a group-based context, while another engages in this form of violence alone?

Nikki Sterkenburg, external PhD candidate at the Institute of Security and Global Affairs in The Hague, was interviewed by the NOS programme Nieuws & Co about the meeting of Thierry Baudet with Alt-Right movement Jared Taylor. 'If Baudet would have wished to stay aloof of this movement, he shouldn’t…

This paper critically compares seven widely used risk assessment tools for violent extremism, including the VERA-2R, the ERG 22+, the SQAT, the IR46, the RRAP, the Radar, and the VAF.

This thesis presents pioneering work on the panchromatic emission of some of the most luminous galaxies in the early Universe: star forming galaxies and active galactic nuclei.

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…

Understanding the evolving landscape of extremism in the 21st century.

How do European Muslim men and women become involved in a violent jihadist struggle abroad?

Sevil Cakir-Kilincoglu defended her thesis on 18 December 2019

On 17 August 1945, two days after the Japanese surrender that also brought an end to the Second World War in Asia, Indonesia declared its independence. The declaration was not recognized by the Netherlands, which resorted to force in its attempt to take control of the inevitable process of decolonization.…

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…

On 12 mei 2020, Darryl Robinson defended 'Exploring Justice in Extreme Cases: Criminal Law Theory and International Criminal Law'. The doctoral research was supervised by Prof. C. Stahn.

This article examines how the threat of terrorism has been addressed at the policy level through an analysis of a specific case in Mali.

When does radicalization not lead to terrorist attacks?

Global climate change is manifest by local-scale changes in precipitation and temperature patterns, including the frequency of extreme weather events (EWEs). EWEs are associated with a myriad range of adverse environmental and societal consequences, including negative impacts to agriculture and food…

Speeches and speech acts have been crucial in settling the question at the centre of every political debate: who gets what, when and where?

In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…

Intergenerational transmission refers to the complex and dynamic process with which values, ideas and behaviors are transmitted across generations. We are specifically interested in the intergenerational transmission of behaviors and beliefs that might result in harm to the individuals involved or society…

Since 2012, thousands of individuals have traveled from Western countries to join jihadist groups in Syria and Iraq. While much has been written about these individuals, only sparse attention has been paid to the social environment of these jihadist travelers and, more specific, the role of family members…

Training a robot in a real-life environment is more or less impossible. Computer scientist and psychologist Roy de Kleijn switched to training in a simulated, virtual one instead. ‘You do have a reality gap, but the more precisely you train the robot, the better it is in practice.’ His inspiration:…

A measured yet theoretically innovative exploration of how Islamophobia and radicalisation intersect and reinforce each other.

In the Master's programme Crisis and Security Management, specialisation Governance of radicalism, extremism and terrorism we focus on the academic body of knowledge on different form of protests, contention, resistance and violence. We explore and explain the emergence of radical and extremist move…

On the 25th of February, CTC researcher Daan Weggemans participated in a hearing of the permanent commission for social affairs and employment. During the hearing the issue of radicalization was discussed in two sessions. The first session gave members of parliament the opportunity to discuss the manifestations…

In recent decades, a more radical Islam has been on the rise in Indonesia, but the government now promotes a moderate form of Islam. In his inaugural lecture, Professor Nico Kaptein will analyse the dynamics of Islam and the influence of the Middle East in this the largest Muslim country in the world.…

Why should our team register for the Telders Moot Court Competition?

Municipalities and security services actively monitor at least 160 radicalized Muslims in The Netherlands, as is shown in research by the Volkskrant. Terrorism expert Jelle van Buuren explained in the media.

This project explores innovative strategies to counter online extremist content, focusing on integrating traditional content moderation tactics with targeted online interventions. Through research, workshops, and data-driven experiments, we aim to answer: How and when should traditional content moderation…

Every summer, Leiden University is the setting of dozens of summer schools in which professionals and students can receive extra training on a specific topic within a short space of time. We took a look at a summer programme on extremism. ‘A recruiter for al-Qaeda said that I could change the world.…