The debate about state behaviour in cyberspace may be set in the wrong legal key.

Misinformation has emerged as a major societal concern. But why do citizens contribute to the dissemination of falsehoods online?

State fragility and conflict continue to be among the most enduring development challenges of the 21st century. The consequences of fragility and conflict on individuals, States and the international community are profound. At the individual level, an estimated 2 billion people or a quarter of the world's…

The Institute for Philosophy at Leiden University is host to the NWO programme,

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.

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.

European countries struggling how to deal with the issue of returning foreign fighters, women and children from the Caliphate.

Professor of Social and Organisational Psychology Carsten de Dreu has been awarded an Advanced Grant by the European Research Council. This subsidy of 2.5 million euros will allow De Dreu to carry out research on the causes of conflicts between groups at both macro- and micro-level.

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

Valerie Sticher has been awarded the Cedric Smith Prize 2021 of the Conflict Research Society (CRS) for an article she wrote as a part of her dissertation at ISGA last May. The Cedric Smith Prize is awarded annually to the best article or thesis chapter in peace and conflict research by a PhD student.…

This project maps the policy of ‘Paz Total’ (Total Peace) and ongoing peace negotiations between non-state armed groups and the government of Colombia under the presidency of Gustavo Petro (2022-2026).

The Latin America and Caribbean Security and Intelligence Network (LACSIN) brings together scholars, practitioners, government agencies and the diplomatic community to develop novel and interdisciplinary approaches to addressing key areas of security and intelligence in Latin America and the Caribbe…

Ilina Georgieva published an article in the journal Contemporary Security Policy on the norm-setting role of intelligence agencies.

A story of Two Mosuls, The Resurrection of the Iraqi Armed Forces and the military defeat of ISIS. In this article, published in the Journal of Strategic Studies, the authors Maarten Broekhof, Martijn Kitzen and Frans Osinga discuss the military adaptation by the Iraqi armed forces and their role in…

The research group War, Peace and Justice brings together scholars, researchers as well as current and former practitioners to explore issues related to the drivers, nature and (new) dynamics of war and conflict, comprehensive approaches to the promotion of sustainable peace, and the role of justice…

If all goes according to plan, Vasileios Karakasis will successfully defend his dissertation on Thursday 15 October. This will not only be a milestone for Vasileios, but also for the Dual PhD Centre (DPC).

Alanna O'Malley, Associate Professor at Leiden University Institute for History, talks about the possible expelling of the Russian ambassador Yuriy Filatov and the risks that come with the decision.

European countries struggling how to deal with the issue of returning foreign fighters, women and children from the Caliphate

A very special occasion for the Dual PhD Centre. Vasileios P. Karakasis is the 25th PhD candidate in the history of the Dual PhD Centre, combining work with PhD research at Leiden University. Karakasis will defend his dissertation: ‘Adding Fuel to the Conflict’ on 15 October. In this interview, he discusses…

Leiden psychologist Carsten de Dreu was presented with the Spinoza Prize by Education Minister Van Engelshoven on 12 September. The award of 2.5 million euros will allow him to continue with his pioneering research on group dynamics.

The impact of a ceasefire shifts over the course of a conflict, as conflict party leaders learn more about each other’s military and political aspirations and adapt their use of ceasefires accordingly. That’s the key message of the dissertation of Valerie Sticher, PhD-candidate at the Faculty of Governance…

Leiden social and organisational psychologist Carsten de Dreu has been awarded a Spinoza Prize, the top science prize in the Netherlands. We talked to him about his passion for group processes, Leiden University and his dreams for the future. ‘A Spinoza opens up a world of possibilities.'

The most densely populated country in Africa, Nigeria, is fighting a war on two fronts. Not only is Nigeria being confronted with violence on a national level by terror group Boko Haram, on a regional level there are conflicts between shepherds and farmers.

The war between Russia and Ukraine, the conflict in Gaza or the global rise of the far-right: topics that stir up emotions but are also regularly discussed in classes at Political Science. Moreover, with a diverse group of students, there is a great diversity of life experiences, backgrounds and opinions.…

The article that was published on 21 January 2020 claims that chip maker ASML wants to be able to export to China but has been unable to obtain the necessary permits. Last summer, the application by the Dutch Ministry of Foreign Affairs (BZ) was suddenly frozen after pressure from the USA, according…

Mensen werken niet alleen liever samen met leden van hun eigen ingroup, ze concurreren er ook liever mee, lieten Leidse onderzoekers in een sociaalpsychologische studie in 51 landen zien. Dit ‘nasty neighbor’- effect was een grote verrassing voor de onderzoekers, totdat ze in studies over dieren doken.…

Political scientist Femke Bakker (Leiden University) has won the 2019 Jean Blondel PhD Prize. According to the European Consortium for Political Research (ECPR), her ‘Hawks and Doves: Democratic Peace Theory Revisited’ is best thesis in politics of the past year.

The socio-economic effects of climate change often do not receive enough attention. At the EuroScience Open Forum (ESOF) a group of researchers will provide more insight. How does climate change affect whether people work together or conversely end up as opponents? And what can we learn from societies…

Everyone benefits when cooperation runs smoothly However, people often act obstructively. Why do they do that? Professor of Social Psychology Carsten de Dreu researches this issue using a wide variety of methods, from brain scans to the role of religion. Inaugural lecture 7 October.

How do harrowing war experiences affect different generations? Students have made a video about poignant family stories. They interviewed other students and writer Dubravka Ugrešić. The premiere of the film was on 4 May during the online Hour of Remembrance. Watch this online memorial.

On October 20 and 21, 2016, Leiden University will host an international conference under the title

During the guest lecture on 9 February, Jaap de Hoop Scheffer, Rob de Wijk and Frans Osinga discussed the situation in Ukraine and Taiwan. The crises in eastern Ukraine and the increasing tensions around Taiwan highlight the challenges the West faces in deterring aggression in the new era of key dynamics…