This omnibus brings together some old and some recent works by Jos Gommans on the warhorse and its impact on medieval and early modern state-formation in South Asia.

A number of scholars joint forces to analyse and re-analyse a number of Merovingian cemeteries and publish the results in the series Merovingian Archaeology in the Low Countries published by Habelt Verlag in Bonn (Germany). We call it the ANASTASIS project. This is the third volume in which the data…

Why is there no Northeast Asian security architecture? Assessing the strategic impediments to a stable East Asia. In this article, published in 'The Pacific Review', the authors Wang (Peking University) en Stevens (Leiden University) discuss the reasons why.

On the 23rd of June Arianna Sacco successfully defended a doctoral thesis and graduated.

This book contextualizes the use of terror as part of wider movements of political contention, demonstrating that terroristic innovation occurs as part of wider historical processes rather than in a vacuum.

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On the occasion of the 80th anniversary of the magna carta of civil aviation, the Convention on International Civil Aviation (Chicago Convention 1944), Professor Steven Truxal has written a leading piece for the European Civil Aviation Conference: The Chicago system: a steadfast legal blueprint for…

This project traces how, why, and under what circumstances scholars invoked the trope of “dogmatism,” especially in controversies. Relevant controversies from various fields, periods, and countries will be subjected to in-depth rhetorical analysis.

In this project, we use social network analysis to analyze the behavior of users in online forums and associated marketplaces over time.

Firearms and violence in Europe–A systematic review by Katharina Krüsselmann, Pauline Aarten, Marieke Liem

Dutch and Colonial History

This research cluster is a part of the Institute of Political Science’s research programme ‘Institutions, Decisions and Collective Behaviour’. Its members examine the sources, design, effects and contestation of norms, rules, institutionalised practices and formal organisations that operate across national…

This subproject of 'From Homo Economicus to Political Animal' analyzes Greek economic thinking in late 5th- and 4th-century philosophical circles.

Op donderdag 17 april 2025 neemt prof. dr. Marco Mostert, Hoogleraar Middeleeuwse Geschiedenis aan de Universiteit Utrecht afscheid.

Who is Economic Man? Every economic paradigm presupposes an anthropology, a theory of human nature. This project explores the anthropologies presupposed and produced by ancient Greek economic texts, and the specific knowledge forms that shape these anthropologies.

In November, Springer published a book on The Future of Drone Use, edited by dr. Bart Custers, associate professor at eLaw, the Center for Law and Digital Technologies of Leiden University.

Authors who would like to publish in Inter-Section are requested to fill in this form as first step in the publication process. Before this form is filled in, the contributor must have requested at least one faculty staff member to support them in the writing and submission process.

Our research focuses on a number of subthemes, such as the history of collecting, the agency of museum collections, the ethics of collecting (including legal aspects), and the integration of humanities and technical research in exploring the collections.

Less than 1 in 10 drug candidates that enter phase 1 clinical trials actually gets approved for human use.

In the Catalysis and Surface Chemistry group, we investigate how catalysis works on the molecular level. The group is divided in six subgroups, focusing on different aspects of heterogeneous catalysis, homogeneous catalysis and electrocatalysis.

The Leiden Institute of Chemistry (LIC) is the basis for research and collaborations of the Leiden chemistry groups. Chemistry is the central science enabling a healthy future in a sustainable society. Chemistry researchers at Leiden University take a fundamental approach in finding tailored solutions…

The CMCB brings together microbial cell biology expertise in Leiden. It aims at optimal resonance between the groups and maximal exploitation of the available infrastructure and to develop innovative cross-boundary technology platforms.

Many of the journal's issues contain short contributions from practitioners of diplomacy. These practitioners' essays offer unique insights into the world of diplomacy and they serve as a source of inspiration for researchers.

Explore the programme structure of the MSc The Politics of Artificial Intelligence at Leiden University: core courses, elective seminars, internship option, thesis research and real-world AI governance cases.

Corruption, integrity (or a lack thereof…) and public values are near omnipresent elements in public administration and politics of all times. Cases of corrupt public officials and politicians continuously emerge. Strangely enough, however, it often remains unknown what actually occurred, how something…

The Executive Board and the Board of Education of the Institute of Psychology are responsible for the organisation. A number of committees offer specialised knowlegde, such as the Research Ethics Committee. Students have a say in programme committees.

Requirements for admission to the Graduate School and the steps described below in short are described in detail in the Leiden University PhD Regulations.

On October 23rd, dr. Bart Custers, associate professor and head of research of eLaw, the Center for Law and Digital Technologies at Leiden Universitty, delivers a keynote address on the big data and law at the International Conference on Big Data Research (ICBDR 2017) in Osaka, Japan

In this project of the Center for Public Values & Ethics (CPVE) ongoing research is conducted on the history of advice to Dutch central government by so-called State committees from 1814 to 2014. State committees have been installed by Dutch central government since 1814 to provide expert advice, research…

Embedding ethical legal and societal aspects for responsible military AI.

Responsible AI for science and a strong and resilient society.

The aim of ANCIENT CHARM was to develop neutron-imaging techniques and the associated equipment, and help establish neutron imaging as a mainstream archaeological analytical technique. In particular, one of the goals was a new imaging technique which called neutron resonant capture imaging combined…

Our research deals with the deep history of Europe and Eurasia, from the inception of farming up until the beginning of the Roman Period. This was a period in which key developments took place that had a profound impact on European landscapes and society until the present day. Our research and teaching…

The Tatiana Afanassjewa-lecture series was a series of public talks in Dutch that was started during the Covid-19 lockdown. The talks were given by Leiden physicists on wednesday evenings, intended for everyone with an interest in physics.

This book aims to unravel some of the mysteries surrounding this exceptional group of larger-than-life Bronze Age blades.

The Netherlands Ministry of Defense and Ministry of Security and Justice have requested the Centre for Terrorism and Counterterrorism to complete a research project on cyber governance from a policy perspective. The results of this project will contribute to the deliverables of the fourth International…

Are you interested in international organisations, issues of peace and security, or current changes in global political relations? Would you like to study the causes of terrorism and the resolution of violent conflicts? Develop your scholarship and skills in international affairs in The Hague.

Debate, Haags Actualiteitencollege

The project aims to build upon cultural studies of digital design and looks at AI’s ethical dilemmas from the viewpoint of Muslim Southeast Asia.

Life Sciences Artificial Intelligence Data Science

Plants, algae and cyanobacteria have the amazing capacity to perform delicate photophysical and photochemical processes of light capture, excitation transfer, charge separation and catalysis in fluctuating living environments. As a consequence, photosynthetic proteins and membranes form dynamic architectures.…

Improving healthcare with our scientific discoveries: that is the goal of pharmaceutical research at Leiden University. And there’s a lot involved in that. Our research starts with the discovery of the effect achieved by a particular substance, and sometimes continues all the way through to the development…

Should the law and norms applicable to armed conflict include a distinct category covering the transition from armed conflict to peace, jus post bellum, and if so what are its characteristics?

The Institute of Education and Child Studies is part of the Faculty of Social and Behavioural Sciences at Leiden University. The institute is governed by an Institute Board under the direction of a rotating chairman, i.e. the Scientific Director and an Director of Studies. The Institute Board is…

In 2020, Leiden University launched its stimulated interdisciplinary programs, including one focused on regenerative medicine.

The work of judges can also be done by AI systems. These systems can formulate an objective proposal for a ruling. But such proposal should always be checked by a judge, says Bart Custers.