Has there been continuity or change in US counterterrorism policy since 9/11? What factors led to the continuity or change, and how do we classify any such continuity or change?

How do leadership behaviour repertoires take shape in public organizations?

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

How have the armed forces of the United Kingdom, the Netherlands and Belgium adapted to the OMLT task in Afghanistan, and what institutional changes have materialised as a consequence of this adaptation?

What factors can explain the dynamics of de facto statehood in Iraqi Kurdistan at internal, national and international levels? What has been the nature of the de facto statehood in Kurdistan since its inception?

On 10 October 2019, Janneke Vink defended her thesis 'The Open Society and Its Animals'. The doctoral research was supervised by Prof. P.B. Cliteur.

This article investigates how parenthood serves as a critical turning point for young people in Latin America, influencing their criminal trajectories.

What drives the behaviour of accountability forums?

How does open government affect the level of public trust?

Carsten Stahn has just published Confronting Colonial Objects: Histories, Legalities and Access to Culture. The book is part of the OUP Cultural Heritage Law and Policy Series.

The aim of this dissertation is to provide insight in interethnic prejudice of children in the Netherlands and attitudes and ideologies that they are exposed to through two socialization agents (parents and children’s books).

In this article, Seda Gürkan, Özlem Atikcan and George Christou examine how EU institutions responded to Turkey’s democratic decline between 2014 and 2024, analysing how conditionality was framed and applied by the European Commission, European Parliament and European Council.

Leiden University Centre for the Arts in Society (LUCAS) is dedicated to ground-breaking and interdisciplinary research dealing with the relations between culture and society.

PhD candidates are encouraged to start thinking about job prospects well before the defence of their thesis. Many PhD graduates find employment in an academic or semi-academic environment.

Conceptualizing ceasefires as bargaining instruments challenges established ideas about the processes that lead up to conflict settlement, and about war re-emergence, with important implications for our understanding of war and peace.

The University wants its teaching and research to have the maximum academic, cultural, social and economic impact.

How can the problems in establishing a sustainable common security and defence mechanism for the EU be explained?

Underneath you find more information on how our faculty works.

Why do sexual violence policies still fail to systematically address men and masculinities, when the need for cultural change among men has been central in public debates since #MeToo?

In this research I assess the impact of the recently discovered gas reserves south off Cyprus on the escalation of the Cyprus conflict.

This dissertation aims to provide insight in ethnic prejudice in Chinese-Dutch children and the ethnic socialization context they are exposed to through three social-contextual factors, i.e., parents, children’s books, and the COVID pandemic.

Explore the MSc in Nationalism, Ethnic Conflict and Development at Leiden University: study governance and diversity, choose elective seminars, complete a thesis and optionally an internship.

The essay For progress has been published to mark the 450th Dies Natalis of Leiden University. In 2025, we are celebrating our 450th anniversary, and the theme of this special year is Ahead of the Times.

Leading computer scientists from a variety of fields share their expertise and insights. Dive into the minds of these researchers and learn about real-world applications, the future of AI and related technologies and cutting-edge research. From chatbots to cybersecurity, from quantum to children's stories,…

The infectious diseases malaria and tuberculosis are responsible for 2.1 million deaths every year. Leiden researchers are currently testing a new tuberculosis vaccine.

The genomic DNA of every organism is organized and compacted in order to fit inside the cell. This is achieved by the joint action of numerous architectural proteins that aid in folding the genome. Genome folding is tightly interconnected with transcription, with genes in certain regions being silenced,…

Generally, PhD candidates are recruited for specific research projects by public advertisement. In addition, unsolicited applications from high potential candidates with an appropriate master degree are welcomed.

Do you have a question about our course offer? View the most frequently asked questions below.

Sterre ter Haar has won the Rachel Carson Graduation Prize for her thesis on how rising levels of CO₂ affect the nutrient content of plants. For the Industrial Ecology student, the award is a crowning achievement after a difficult period of recovering from long COVID.

LUCAS’ Medieval and Early Modern (MEM) cluster brings together expertise in the fields of art, literature and media. It focuses on the arts in society in Europe and beyond during a vast period of time, from the 7th through to the 18th centuries CE.

In a new essay for Ethics & International Affairs, Dr Henning Lahmann, Assistant Professor of International Law & Technology at eLaw, addresses the question whether states should resort to social media to warn a civilian population ahead of military operations.

The research group Corporate Governance and Strategy investigates how, with whom and for whom a firm/corporation creates/captures value, in order to inform practice and rule makers about governance issues. By focusing on the dual character of the firm as an entity by itself but also consisting of stakeholders,…

This dissertation focuses on a new field of artistic research in which a visual artist takes on the role of researcher. The main research question is whether performance art integrated in an ecumenical service, combined with artistic directions from the artist, can enhance the religious experience of…

Want to continue developing yourself and boost your career at the same time? Leiden University offers a range of lectures, master classes and courses at academic level.

What determines civic engagement in transboundary hydropolitics and why has it been muted in the Eastern Nile Basin?

What are the conditions under which coercive diplomacy can compel a State to abandon its nuclear weapons program?

Supervisor: Natalia Ortiz Zacarías

Explore the MSc in International Politics at Leiden University: a one‑year programme focused on international conflict, crisis management, diplomacy and global cooperation.

Explore the MSc Democracy and Representation at Leiden University: examine challenges facing modern democracies—populism, representation, media influence—and enhance your analytical skills.

Study the MSc in Political Science: International Organisation at Leiden University in The Hague. Learn about international institutions, governance, and global policy.

This thesis describes the synthesis, analysis of various tetrazine bearing compounds and use in bioorthogonal chemistry.