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…

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…

Terrorist groups adapt to environmental changes to maintain power. This project provides new insights by developing a theory of strategic target selection and using big data analytics and machine learning to test these hypotheses.

The European Research Council (ERC) announced the awarding of 494 Starting Grants to young scientists across Europe. One of these scholars is Corinna Jentzsch, Assistant Professor of International Relations at the Institute of Political Science. She received this grant for her research project ‘Countering…

Nerve pain is one of the most common side effects of chemotherapy. It is therefore one of the biggest reasons for cancer patients to stop treatment early. Darcy Reynolds worked on new drug candidates against this pain during her bachelor's thesis. She developed a new series of molecules that increase…

This article provides a comprehensive analysis of the Islamic State's use of images taken by drones, drawing on a dataset of ISIS propaganda images from October 2016 to December 2018.

Refugees’ effect on domestic terrorism is conditioned by host-country social perception (attitude about living next-door to foreigners) and economic competition. These hypotheses are tested cross-nationally from 1995-2014 leveraging data from the World Values Survey.

The Executive Board of Leiden University has asked the University Council to advise on its proposed decision to reactivate the person counters/sensors in due course. The Council will now look at this carefully before the Board makes a final decision. The advice of the University’s participation body…

On 12 September 2024, the official ceremony opening the academic year 24-25 for students of the European Law master’s programme took place at Leiden Law School, organised by the Europa Institute.

The more than 370 sensors that have been hung up in Leiden University buildings to count the people present will not be switched on again. The equipment will eventually be removed from the buildings.

UnMiSSeD studies the interaction between misinformation and science in societal debates using a mixed qualitative-quantitative approach.

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

This article explores how ISIS and the Taliban have fostered support through their parallel legal systems.

This paper investigates possible convergence of issue salience of terrorism among citizens within the European Union for ten jihadist attacks in the period 2015–2017 using Eurobarometer survey data.

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

Lecture, webinar

The term “Lone Actor” has been applied to a variety of violent individuals who are thought to act out of ideological motivations using terrorist tactics.

This project compares and explains dynamics of cross-border cooperation among European actors in the field of counterterrorism (CT).

The research project ‘The History of National Security, 1945-present', is funded by the Netherlands Organisation for Scientific Research (NWO), the Campus The Hague/Leiden University and the Netherlands Institute for Military History (NIMH). The project will run until the summer of 2013, when we hope…

‘Countering violent extremism – the international deradicalization agenda’ is the name of the book Tahir Abbas published last month. In this interview the associate professor in Terrorism and Political Violence at ISGA tells about the backgrounds and goals of the book.

In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…

This article provides an in‐depth assessment of lone actor terrorists’ attack planning and preparation.

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

Lecture

On Thursday 11 November, Women in International Security Netherlands (WIIS-NL) held its inaugural webinar event on 11 November with four speakers in conjunction with the International Centre for Terrorism (ICCT) and the Chair UN Studies in Peace and Justice at Leiden University.

Jeanine de Roy van Zuijdewijn, PhD candidate at ISGA, explained the dilemma countries face in the aftermath of terror attacks.

On 15 March, the 28-year-old Australian right-wing extremist Brenton Tarrant committed a terrorist attack on two mosques in Christchurch in New Zealand. Jelle van Buuren, Bart Schuurman, Daan Weggemans and Tahir Abbas all working at the Institute of Security and Global Affairs (ISGA) have been approached…

Jelle van Buuren, assistant professor at the Institute of Security and Global Affairs (ISGA), does not understand that Mark van Ostaijen puts away the communication after the attacks like: ‘It is a confused man, you can rest easy.’

Together with a group of researchers from TU Delft and Erasmus University, Leiden University have received a seed grant for conducting a project “Perceived Risk of Terrorism and its Implications for (Counter-Terrorism) Communication Strategies”.

The following staff members are currently part of the LIAS PhD Council

On Thursday 11 November, Women in International Security Netherlands (WIIS-NL) held its inaugural webinar event on 11 November with four speakers in conjunction with the International Centre for Terrorism (ICCT) and the Chair UN Studies in Peace and Justice at Leiden University.

The ‘Community Resilience Fund’, a programme of the Canadian federal government, approved a research grant for Dr. Bart Schuurman of the Institute of Security and Global Affairs.

Preventing terrorism before it happens seems like an idea no one would disagree to. But is it possible? How do counter-radicalisation policies look like? And are there dangers of unintended consequences? Francesco Ragazzi, Assistant Professor at Leiden University’s Institute of Political Science, has…

In this opinion article published in World Development, the authors present five research and policy priorities. While it is clear that ‘pluriversal’ designs need to guide the way forward (Kothari et al 2019), defining a set of key pillars can provide direction and purpose across this pluriversality.…

One of the current research projects funded by the profile area Political Legitimacy is the research group From Disorder to Order: Conflict and the Resources of Legitimacy.

An analysis of researchers' global mobility reveals that limiting the circulation of scholars will damage the scientific system.

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

Joana Cook talks about the Islamist parties increasingly taking power in the last four decades on ABC News.

Bart Schuurman is a research Fellow at the International Centre for Counterterrorism (ICCT) and at the Institute of Security and Global Affairs (ISGA) in The Hague. He was interviewed by Abigail Esman of the Investigative Project on Terrorism (IPT) about his new book 'Becoming A European Homegrown Jihadist'.…

On 31 May, during a three-hour live broadcast on the Dutch online television channel Islaam.tv, 100,400 euros was pledged to the Belgian-Moroccan imam Tarik Ibn Ali.

Cristina Grasseni, Federico de Musso, Ola Gracjasz, Maria Vasile, Vincent Walstra and Marilena Poulopoulou are part of the 'Food citizens?' Research project.

What does site patterning reveal about the social landscape dynamics across the historical divide?

This section features online articles by or about the team members of the Food Citizens? project.