How do the pathways of Dutch converts to Islam involved in jihadist movements differ from those of Dutch converts who are not, in terms of their life prior to Islam, their conversion experience and the form of involvement with the Islamic community after conversion?

The question of how military interventions can best transition to a long term counter-terrorism policy forms the core research question of three interlinked reports. This research project has been completed with support of NATO’s Science for Peace and Security Programme. Leiden University researchers…

After every attack, terrorism researchers are often asked the same question: who did it? Jeanine de Roy van Zuijdewijn, a researcher at Leiden University, doesn’t always have a ready-made answer.

Jeanine de Roy van Zuijdewijn, researcher and lecturer at ISGA, was interviewed by Deutsche Welle (DW) on the topic of career foreign fighters. This is also the topic of study in her latest publication.

Terrorism experts Daan Weggemans (Leiden University) and Beatrice de Graaf (Utrecht University) conducted one of the first scientific studies on the societal reintegration of jihadist former detainees. They showed that the reintegration process isn't without problems. Their conlusions are presented…

Advocate-General Simon Minks was involved as a public prosecutor in the Context proceedings. In this interview he shares some insights with the Centre for Professional Learning, of which he is a Fellow.

In the past decades terrorists have regularly surprised us with unexpected and spectacular attacks, such as the one on the World Trade Centre in New York. How can intelligence services stay one step ahead of them? Consult Charles Darwin and Steven Spielberg is the advice of terrorism expert Yannick…

Subproject of "Historicizing Security. Enemies of the State, 1813 until present".

Lecture

The United States and the European Union need to work together more closely in the field of the law to fight terrorists and criminals who are operating increasingly internationally. This was the advice given by American Minister of Justice Loretta Lynch during her visit to Leiden University on 1 Jun…

The MOOC Terrorism and Counterterrorism: Comparing Theory & Practice was one of the first MOOCs of Leiden University to go live back in September 2013. More than three years have passed and the MOOC has attracted over 100,000 people coming from more than 100 countries.

Researchers on terrorism Bart Schuurman and Liesbeth van der Heide (Institute of Security and Global Affairs) studied the files of 159 persons convicted of terrorism in the Netherlands during 2012-2017. Their main question: how effective is the special reintegration project for this type of delinquents…

We strive to address the challenge of constructing a modeling language to write software which can take advantage of recent hardware developments (multicore, cloud) without compromising in its abstraction levels.

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'.…

De master's programme Comparative Criminal Justice at Leiden University focuses on criminology, criminal law and their mutual relationship. The programme offers an international comparative perspective, analysing criminal justice systems, legislation and policies in common law and civil law countrie…

A review of Elke Devroe's participation in the European Society of Criminology of 2016 : The first conference of the European Society of Criminology was held in 2000 in Lausanne. Now, 16 years later and lots of new ESC-members later, the 16th Annual conference of the European Society of Criminology…

In April 2018, Melanie Fink was elected as a member of the Coordinating Committee of the ESIL Interest Group ‘The EU as a Global Actor’. For the next four years, she will work in that function alongside Christine Kaddous (University of Geneva), Anne Thies (University of Reading), and Ramses Wessel (University…

Perspectives on Terrorism

Claire Vergerio, political scientist at Leiden University, has been awarded a VENI grant by Dutch research organisation NWO. This will allow her to conduct an in-depth analysis of the legal rights and duties of non-state actors involved in warfare. The aim is to tackle some persistent blindspots in…

On 20 April 2017 Jorrit Rijpma, Eugenio Cusumano, and Melanie Fink organise a Workshop to discuss the legal and policy implications of the surge in privately conducted search and rescue operations in the Central Mediterranean. The Workshop takes place in cooperation between the Law School and the Faculty…

Research is the basis for good security policy. By analysing the motives of radicalised people and identifying the biggest risks in the area of digital communication, Leiden University researchers are helping governments to formulate effective countermeasures.

On 21 March 2019, James Welch defended his thesis 'The Grotius Sanction: Deus Ex Machina. The legal, ethical, and strategic use of drones in transnational armed conflict and counterterrorism'. The doctoral research was supervised by Prof. dr. P.B Cliteur.

The Centro de Estudos Internacionais at Instituto Universitário de Lisboa (ISCTE-IUL) will host the "Europe as a Global Actor" International Conference on 23rd- 24th May to discuss the changes in the global security environment and the subsequent development of new tools and approaches in the EU’s external…

On Thursday 28 January 2016, Prof. Carsten Stahn contributed to the OPCW Sub-Working Group on Non-State Actors, together with Professors Andrew Clapham (Geneva) and Dapo Akande (Oxford), in the presence of the Ahmet Üzümcü, Director-General of the OPCW.

As a result of two attacks in Germany and one attack in France within only one week, fears of new terrorist attacks in Europe have reignited. In France a radicalised police agent stabbed and killed four people. In Germany a man from Syria drove his car into a line of cars wounding sixteen people and…

On Thursday 25 and Friday 26 October 2018, the Europa Institute organized a conference within the framework of ‘Interaction between Legal Systems (ILS): Policing the High Seas’ and in cooperation with four Interest Groups of the European Society of International Law. The event brought together representatives…

To what extent are there differences between countries in and outside the European Union and the Schengen area in the level of crimmigration, the merger between migration control and crime control, and to what extent can these differences be explained by the way in which state and non-state actors in…

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