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

This book discusses theories of crisis management and the radical right, to shed light on how responses to crisis influence radical right parties in their presence, discourse, and evolution. The book offers a comparative perspective by examining case studies with various traditions of radical right…

These syntheses allow the team to determine the extent to which schools-based interventions are effective at targeting radicalisation-related outcomes.

This reflection for Critical Studies on Terrorism, explores two decades of the 'War of Terror' and what it means today.

La radicalisation est devenue un mot désignant notre monde en couleurs négatives. Ce livre cherche à comprendre ce que c'est que la radicalisation au Sahel et aux Pays-Bas?

Can behaviour in an online economic game be understood as a representation of radicalisation propensity?

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.

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

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…

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

This book examines how Muslim communities in the Netherlands perceive and experience extremism, counter-radicalisation policies, and Islamophobia.

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, Prof. Tahir Abbas, Inés Bolaños Somoano, Joana Cook, Isabelle Frens, Graig R. Klein and Richard McNeil-Willson look into the manifesto that was linked to the Buffalo attack in order to better understand the broader context and specific factors that motivated the perpetrator.

This study delivers a comprehensive picture of the causes of radicalization in the Eastern and Southeastern regions of Turkey. It demonstrates how regionally specific factors enable ideologically disparate terrorist groups to recruit and radicalize from the same population.

This study presents the findings of a laboratory-based experiment testing hypothesised processes implicated in the prevention of violent radicalisation through counter-narratives. The central aims of the study were to contribute to counter-narrative theory, whilst highlighting the value of experimental…

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.

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

In this publication, May Tamimova and Tahir Abbas researched the existing literature about violence and hatred against places of worship.

What influence did the internal debates on the use of violence within left-wing activist movements, and the government’s response to this (political) violence, have on the development, level, and continuity of the violence originating from these movements in the period 1965–2015?

When does radicalization not lead to terrorist attacks?

Examining mediation and moderation.

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.

This research examines how right-wing extremist parents perceive and discuss their role in the ideological socialisation of their children.

How to minimalize the chance of recidivism for extremist prisoners.

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

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…

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…

Could policies aimed at preventing radicalisation undermine the very trust and social cohesion they aim to strengthen?

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?

People who are arrested on suspicion of preparing an attack are at risk of becoming radicalised either during or after their detention. Whether or not to arrest someone requires careful consideration. At the end of the prison sentence, it is important to provide effective supervision of the reintegration…

The Terrorism and Political Violence research group at Leiden University examines the causes of radicalisation, the tactics of extremist groups, and the effectiveness of counter-terrorism policies. We also explore the role of the media and the influence of postcolonial legacies in the Global South,…

Understanding what motivates foreign fighters to go and fight in war zones and analysing their social environment offers a basis for preventing them from going.

Polarisation in our society is on the rise. What makes people increasingly radical? How do we protect ourselves from extremist, terrorist or criminal threats, be they physical or in the cyber world? And what role do intelligence services play in this?

In one year, you’ll complete five months of coursework, conduct an Embedded Research Project, and write your thesis.

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.

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.

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.

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.

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

This research cluster is a part of the Institute of Political Science’s research programme ‘Institutions, Decisions and Collective Behaviour’. Its members study phenomena such as migration, immigration, citizenship, integration, ethnic parties, minority and caste-based politics, borders and migration,…