As terrorism scholars, we are intrigued by those who engage in violence. We study their motivations, tactics, ideology, organisational structures, and pathways to (de-)mobilisation, hoping to better understand terrorism and how we can counter it. Far less attention is paid to what happens after an attack…

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.

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

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.

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…

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.

Rising geopolitical tensions are causing states and national elites to innovate their use of the past for present-day political ends. This is certainly true for the People’s Republic of China, which celebrated its 75th anniversary in 2024 amid mounting superpower rivalry, ideological tensions with the…

This PhD project investigates the distribution and interpretation of quantity expressions in relation to the mass/count distinction cross-linguistically.

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.

Tonal bilinguals of two closely related Chinese dialects are amazing people. They handle two tonal systems in their mind; their two vocabularies are from closely related dialects, and they write translation equivalents with common Chinese characters. Their unique language situation makes their mind…

The ability to count is a property not often attributed to materials, despite the abundance of memory in materials. Regardless of how a material stores information, it is often difficult to retrieve exactly ‘what’ a material remembers.

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.…

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

All PhD candidates who started their project in 2019 or later take a mandatory course on academic integrity, preferably in their first year.

COUNTERRR examines domestic responses to jihadist armed groups in Africa, analyzing variation in state repression, community resistance, and the evolution of security across Mali, Nigeria, and Mozambique.

The IBL PhD and Postdoc Association, also known as IPPA, seeks to create a platform for PhDs and Postdocs at the Institute of Biology Leiden to interact with one another. IPPA arranges social gatherings approximately four times each year, which include food and drinks, with the goal of integrating PhDs…

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.

The LIAS Advisory Council is chaired by prof.dr. Gabrielle van den Berg and meets with the LIAS Management Team twice per semester.

The Faculty of Archaeology at Leiden University is home to many experts on human evolution. The following staff members are part of the Leiden Human Evolution Collective.

In this article for Studies in Conflict & Terrorism, the authors analyse the evolution and interplay of national policies and international diplomacy on cyber terrorism within and across the UNSC’s permanent five members and the UN process on cyber norms (GGE and OEWG).

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

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

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'.…

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

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

Our East Asia experts work across various disciplines on global issues such as migration, heritage, and colonialism.

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

What is it like to study International Studies in The Hague? Read how Vincent, student of International Studies, spends his day on average.

Leiden University and China import partner.

When doing business in foreign countries, you will encounter different languages and cultures. How does knowledge of cultural differences help you when you're trying to start a business or close a deal in another country?

From The Cognitive Continuum of Electronic Music:

In a modernist interpretation of migration controls, nation states play a major role. This book challenges this interpretation by showing that comprehensive migration checks and permanent border controls appeared much earlier, in early modern dynastic states and empires, and predated nation states by…

We encourage you to contact your faculty's Academia in Motion team (fAiM). Each faculty team translates the Academia in Motion commitments and approach to their own unique needs and context.

Sophie Vériter explores a small state’s impact on EU security governance, a hard challenge means against big states in this policy area.

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,…

Jeanine de Roy van Zuijdewijn was invited to give the subject matter expert speech during the plenary meeting of the working groups of the Global Coalition against Daesh in Copenhagen on 28 January 2020.

Lipsius, Cleveringaplaats 1, 2311 BD, Leiden

Risk has become one of the defining features of modern society. This course examines various types of safety and security risks, and how these are perceived and dealt with in a wide array of professional and academic fields, ranging from criminology, counter-terrorism and cyber security, to philosophy,…

Grace Leksana defended her thesis on 26 May 2020.

LUCAS hosts a wide variety of research. Here we outline some of the most important research themes.