David Ehrhardt studies governance and institutional change in Africa, with a focus on the role of non-state leaders (such as traditional and religious leaders) in promoting changes that enhance development. He is also co-lead of the Learning Mindset innovation project, which develops and researches…

Anar Ahmadov (PhD, London School of Economics) is broadly trained in political economy, sociology, development studies, and public policy. Prior to joining Leiden, he has held research and teaching positions at Princeton University, Oxford University, and the London School of Economics (LSE). For over…

Maja Vodopivec teaches several courses in Peace and Conflict Studies track of the World Politics major, and a course in Global History track of the Human Diversity major. Her research interest lies in postwar Japanese intellectual history and peace and conflict studies. Extension number: 8372

Since January 2018, Aukje Nauta is affiliated as a parttime professor with a special assignment, 'Enhancing individuals in a dynamic work context' at Leiden University, on behalf of Sioo.

Adam Lichtenheld is an Assistant Professor of Peace Studies, Conflict Resolution, and International Relations at the Institute of Security and Global Affairs. He is an expert on forced displacement, armed conflict, political violence, peacebuilding, and post-conflict development, with a focus on Africa…

Rob de Wijk is Professor of International Relations at Leiden University. Besides that, he is also chairman of the National Security Think Tank (Denktank Nationale Veiligheid) and columnist for the national daily newpaper Trouw and monthly for Energiepodium.nl.

That the tax authorities are allowed to impose taxes is widely known. What is less well known is when the tax authorities must impose taxes. And what to do when one set of regulations requires the tax authorities to impose taxes while other regulations prevent them from doing exactly that? Vergouwen’s…

Yung Lin received her PhD in Security and Global Affairs from Leiden University in December 2025. Her research examines identity-based conflict, public diplomacy, and non-traditional security in the Indo-Pacific.

Angelo Romano is an Assistant Professor at the unit Social, Economic and Organisational Psychology at the Institute of Psychology. He is interested in understanding the psychology of conflict and cooperation among people, groups, and nations.

I specialize in the field of modern Middle East studies, concentrating on the region's politics and international relations (history and theory), foreign policy analysis, and diplomatic history. As a historian of international relations I have developed special research interests in the Arab-Israeli…

When Professor of Tax Law Jan Vleggeert delivered his inaugural lecture in Leiden University’s Academy Building on 30 October 2020, only 30 people were allowed to attend due to coronavirus measures. On 10 June 2022, Vleggeert was therefore given the opportunity to deliver a lecture to a much larger…

The chance that it will do so is about zero, but Russia is legally obliged to investigate violations of law during the war in Ukraine. States that enter into an armed conflict often deny liability, but under international humanitarian law and human rights they are obliged to investigate their military…

Eric van Dijk graduated in economics and in psychology at Groningen University, and then moved to Leiden to work on his dissertation on social dilemmas. In 1993 he defended his dissertation (cum laude). His research concentrates on the understanding of economic and social decision making. In 2002 he…

Herman Siemens is a Senior University Lecturer at the Institute for Philosophy.

Ahmet Serdar Günaydin is a PhD candidate at the Institute of Security and Global Affairs at Leiden University. His research focuses on the United Nations special political missions and their approaches towards fostering national dialogues and policy reforms. He explores the multilateral diplomatic efforts…

Madeleine O. Hosli is Professor of International Relations at Leiden University (PhD 1992). Her main research interests are in international political economy, international organisations and European integration.

Håvar Solheim is an Assistant Professor at the Institute for History.

Babak RezaeeDaryakenari is associate professor of International Relations at the Institute of Political Science.

Louis Sicking lectures medieval and early modern history at the Leiden University Institute for History and is Aemilius Papinianus professor of History of Public International Law, at VU University Amsterdam.

Conference

Prof. Mr. Dr. R.C. Hartendorp has been a staff member of History of Law since 1 March 2019, when he was appointed to Leiden University’s new sponsored chair in Societal Effectiveness of the Justice System, which is financed through Rechtbank Den Haag.

Maarten Kunst is a professor of Criminology at the Institute for Criminal Law and Criminology. From November 1, 2020, to November 1, 2025, Maarten chaired the Criminology Department. Prior to that, he was director of the criminology programs for over three years and a member of various examination committees.…

Jan Crijns (1978) is Professor of Criminal Law and Criminal Procedure at the Institute of Criminal Law and Criminology of Leiden University. From 15 February 2024, he holds the position of Vice Dean of Leiden Law School.

Professor Haentjens has held the chair for Civil Law since 1 January 2023.