Hein Drop is an external PhD candidate / guest at the Institute for History.

Niels van der Salm is a PhD candidate and lecturer at the Institute for Area Studies.

Yuyang Wei is a PhD candidate at the Leiden University Centre for Linguistics.

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

Four years of war in Ukraine have transformed the nature of warfare, with drones, digital defence systems and improvised solutions shaping the battlefield. At a recent symposium, Dutch and Ukrainian experts discussed frontline conditions. What lessons do they see for Europe?

China is actively attempting to silence critical voices about the country, including in the Netherlands. This is the main conclusion of a report on Chinese interference and intimidation within the Dutch media landscape. The media are often not well prepared for this.

Karolina Kudlek is a postdoctoral researcher at the Institute for Philosophy.

Sjoerd Keulen holds the Special Chair in Public Audit, Policy Evaluation and Accountability established and funded by the Netherlands Court of Audit since 2023. Sjoerd's teaching and research focuses on policy research with impact. Research-based information is crucial for assessing the performance…

I am a political scientist with a focused research agenda on two interrelated strands: (i) understanding the contextual factors and institutional frameworks that enable politicians and bureaucrats to deliver successful policy outcomes in the Global South; and (ii) decentring Public Administration by…

Lars Dorren is an assistant professor at the Institute of Public Administration (Leiden University), interested in knowledge use in processes of reasoning and decision-making. As an ethnographer, Lars approaches reasoning as a dynamic group activity; a spontaneous practice in which individuals rely…

Henriëtte van den Heuvel is Scientific Director of the Institute of Political Science.

Justin Spruit is a lecturer at the institute of Political Science.

Bachelor, Master

On Tuesday 30 September 2025, PhD candidate Jonathan Collins will defend his dissertation A Wolf in Sheep’s Clothing: A Mixed-Methods Analysis of the Far-Right Alt-Tech Social Media Movement in Leiden’s Academy Building. His work examines the communication dynamics of far-right communities on alternative…

How do you fulfill a chairing position during a team meeting? How do you visualise a dataset for a presentation? How do you write the introduction to a scientific article? All Science students can find the answers to these and many more questions in the 100+ skill modules on the digital Science Skills…

Dr. Joana Cook is a graduate of King’s College London where she completed her MA and PhD in the Department of War Studies (BA University of Regina). Her research more broadly focuses on women in violent extremism, countering violent extremism, and counter-terrorism practices. More recent scholarly interests…

Dr. Sarah Carthy is an assistant professor in terrorism an political violence at the Institute of Security and Global Affairs. She is a graduate of the University of Galway where she completed her BA and PhD in Psychology. Her research mainly focuses on radicalisation, evidence-based approaches to prevention…

Stijn Willem van ’t Land works as a researcher and PhD candidate for the Institute of Security and Global Affairs (ISGA). His doctoral research focuses on violence committed by lone actors.

Roy Hofkamp is a PhD-researcher at Leiden University - Institute of Security and Global Affairs. His research interests lie, among other things, in governance and responsibilization in relation to close protection. He is involved in the research project Close Protection and Surveillance. He has a background…

George Dikaios is a Marie Curie Fellow at the Institute of Political Science.

PhD defence

Lecture, European Union Seminar

Jonathan Collins is a PhD candidate at Charles and Leiden University.

Isabelle Frens is a researcher at the Institute of Security and Global Affairs at Leiden University within the research group Terrorism and Political Violence. She has a background in Liberal Arts & Science (BSc) and Social Psychology (MSc).