Promotores: J.J.M.M. Rutten, F.S. de Boer, Co-promotor: M.M. Bonsangue

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.

Completing your Master’s in Biology gives you an internationally recognised degree which you can follow up with a PhD track. With your acquainted skills, you’re a much requested professional in and outside research.

After graduation you are well equipped to start a career in evolutionary research or to take the responsibility for projects in an industrial or institutional research environment.

Assistance for refugee students, first-generation students, and students from Suriname and the Caribbean region of The Netherlands.

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.

Whether it's brushing up on a language, a course on current legal issues, or a master's degree in cybersecurity. Get inspired at the Online Open Day for Professionals on 2 November.

After graduation you have a lot of opportunities: academics are highly sought after in Dutch secondary education or mbo teaching. You can also aim for a management position or work as a researcher within the field of Biology.

With an MSc in Biology you are well prepared for future jobs in research or industry. After your graduation you can pursue a PhD career or a career as a researcher, focusing on groundbreaking research on sustainability, at universities and research institutes.

The aim of the RAISE study is to investigate how resilient people respond to stress. Specifically, we will study how key biological systems (HPA-axis, immune system) interact with the brain and social environment in order to facilitate resilient functioning after childhood adversities.

The University’s Vision on Student Well-Being outlines how the University plans to promote student well-being in the coming years.

Completing your Master’s in Biology gives you an internationally recognised degree which you can follow up with a PhD track. With your acquainted skills, you’re a much requested professional in and outside research.

Many students receive their first job offer during or right after their Business Studies internship. After graduating you can also aim for a career in Biology research.

This master specialisation is ideally suited as a basis for starting a research career at a university or research institute and for a position in a bioscience-based company.

‘To be honest, I don’t really care about what type of research is going on. Just let me do my own thing and everything is fine,’ according to biotechnical officer Davy de Witt. In this interview, he tells about his tasks and experiences at the Institute of Biology Leiden, where he has been employed…

A group of early career scientists have written a code of ethics through an initiative of the World Economic Forum. Chemist and co-author Sander van Kasteren explains its importance: ‘We want to show that we scientists have our own inherent morals too, and that we too are part of society.’

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,…