Organic amendments applied to agricultural fields can partially offset our carbon emissions to the atmosphere and improve the resilience of agriculture to the effects of climate change. Driving these benefits, however, are complex and poorly understood interactions between organic amendment properties,…

Understanding how chemical complexity emerges during star formation requires connecting molecular material preserved in interstellar ices with that observed in the gas phase after protostellar heating begins.

Bacteria often experience external challenges, such as changes in environmental conditions or attacks by bacteriophages.

2026

The international legal order is in a process of transformation. But how transforms globalization the international legal order? This research programme provides a clearer framework to analyze this..

View the course structure for the MSc International Organisation at Leiden University. Includes semester overview, ECTS credits, and course descriptions for the September start in The Hague.

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How can we assist Universitas Indonesia's department of International law to improve their educational and applied research programs on Transnational Law, Asset Recovery and International Investment Arbitration, with an eye on Indonesia’s security and rule of law reform agenda and the needs of the…

We are convinced that you’ll have a wonderful time at Leiden University, but you don’t have to take our word for it. If you’re looking for objective opinions of what it’s like to study here, listen to what current students and alumni have said about it!

Conference

On April 19, Pax Initiative, a youth led NGO, held its first ever event at the Museon in the Hague. The event, “International Court of Justice Idealab: The Future of the ICJ” was a productive and inspiring discussion among students and young professionals on how the Court can reach the 16th Sustainable…

The central theme of the NWO-project ‘The Promise of Organization’ is the evolution of political organization during the 19th century. We focus on the enthusiasm, arguments and concrete activities of the organizers as well as the criticism offered by opponents of modern political organization.

Building on the recent initiative to truly globalize the field of international relations, this book provides an innovative interrogation of regionalism.

Petra van der Bekerom, Joris van der Voet, and Johan Christensen, three assistant professors at Leiden University, conducted a large-scale survey experiment about whether citizens are more negative about failing service delivery than private organizations.

Netherton Syndrome (NTS) is a rare genetic skin disease caused by mutations in the serine protease inhibitor Kazal-type 5 gene, which encodes the lympho-epithelial Kazal-type-related inhibitor. NTS patients have a profound impaired skin barrier function. Because SC lipids play a crucial role in the…

Around the world, there is a growing movement to decolonise university curricula, with both students and educators seeking to disrupt existing epistemic hierarchies within higher education. This research project aims to unravel what decolonising means in general and what it means for the International…

ISBA2025

A series of workshops at Leiden University and the University of Hamburg will act as a forum in which international legal scholars whose research adopts a behavioural approach can present their works-in-progress and gain feedback from a broad range of peers, including scholars in economics and cognitive…

Amy Strecker assesses the institutional framework for landscape protection, analyses the interplay between landscape and human rights, and links the etymology and theory of landscape with its articulation in law.

Do recent developments in the European security architecture signal the end of multilateral cooperation, or the beginning of a new era with emerging forms of international security collaboration?

It is the aim of this project to better understand how the physical properties of lipids influences the structure and overall barrier function of the skin.

Archaeolandscapes International is an educational and scientific not-for-profit organisation with the objective to promote non-destructive prospecting methods for archaeological investigations.

Public management scholars have long debated public and private sector differences. However, the generalizability of empirical results has been limited due to the shortage of cross-national studies.

What makes some international organisations more likely to succumb to crises where others manage to survive or even thrive? And what can international organisations do to become resilient and withstand existential challenges? Political Scientist Gisela Hirschmann (Leiden University) studied the example…

Women in International Security -Netherlands (WIIS-NL) is an affiliate of WIIS Global. WIIS-NL Members include: professionals, civil servants, academics, NGOs, employees of international bodies and organizations, embassy staff, politicians, students, and interested members of the general public. The…

International Relations and European Politics is one of the three organisational clusters of the Institute of Political Science.

The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main SC lipid classes are ceramides (CER), cholesterol and free fatty acids.

This paper describes two synthetic lipid models designed to replace human stratum corneum (SC) in studies of the impact of volatile organic chemicals on the molecular organization of the skin barrier lipids.

The lipid matrix in the stratum corneum (SC), the upper layer of the skin, plays a critical role in the skin barrier. The matrix consists of ceramides (CERs), cholesterol (CHOL) and free fatty acids (FFAs).

Every organisms in the tree of life faces the same challenge: the length of its DNA exceeds the volume of the cell it needs to fit in. Several strategies have evolved to solve this problem, one of them being the expression of proteins that bind and organize the DNA.

Physicians and researchers of the Leiden University Medical Center (LUMC) and Leiden University are working on therapies for restoring damaged organs such as hearts and kidneys. They are even trying to construct tailor-made organs. Read more on this topic in the new science dossier on Vascular and Regenerative…

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…

How do commissions of inquiry operating in conflict situations utilize international law, and how can inquiry findings be utilized by other bodies belonging to the international legal community?

At a time of urgent threats to both the planet and multilateralism, Brian McGarry (Assistant Professor of Public International Law at the Grotius Centre for International Legal Studies) has published a new volume on the past and future of international environmental law.

For both Dutch and international students, a Humanities degree provides a strong foundation for a career that crosses borders.

In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…

Beyond Empires explores the complexity of empire building from the point of view of self-organized networks, rather than from the point of view of the central state.

Are you thinking about studying International Relations? Learn more about the programme and watch the general introduction video.

This PhD dissertation examines international responsibility for the crime of aggression from a public international law perspective. Under customary international law, as well as the amendments to the Rome Statute of the International Criminal Court adopted in the Review Conference in Kampala in 2010,…

International partnerships in which Leiden University participates.

How do Humanitarian Response Organizations (HROs) and Virtual & Technical Communities (V&TCs) collaboratively govern disaster sensemaking processes, and what challenges shape the effectiveness of these collaborations between 2010 and 2016?

This study discusses the position of the monasteries in pre-1950s Tibetan societies and how that position was informed by Buddhist monastic ideology.