Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.

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?

In the first part, we introduce a new condition, called toric-additivity, on a family of abelian varieties degenerating to a semi-abelian scheme over a normal crossing divisor.

Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.

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

Is online radicalisation is an analytically useful concept when discussing contemporary cases of terrorism?

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?

What political factors affect the speed or duration of EU legislative decision-making?

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?

How do leadership behaviour repertoires take shape in public organizations?

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?

How does open government affect the level of public trust?

How does the design of online participation platforms influence the inclusivity of online direct participation?

How is the effect of kleptocracy on foreign policy change mediated by the political-administrative relationship?

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?

What contributes to the successes and failures of governance networks in small to medium-sized Western European host cities in attracting International Organizations?

What drives the behaviour of accountability forums?

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).

How were (post) colonial migrants included in post-war welfare systems?

As Board Secretary, Corry Donner aims to be a ‘spider in the web’; someone who keeps a watchful eye on and brings together all the different perspectives of the institute’s board. Now she's left her carefully woven web at the university and transfer her tasks to her successor. Last September, we talked…

Below you can read about studies we have carried out in the past.

In a longitudinal study, Eichengreen and colleagues explored how the certain aspects of emotional intelligence impact the development of adolescents’ mental health, thus identifying potential warning signs and targets for intervention programs. Despite a higher risk for mental health issues and lesser…

Wearing All Stars and ‘just’ a pair of jeans, with a backpack slung over his shoulder. It was an informal Friday afternoon with Mark Rutte, NATO Secretary General, at Wijnhaven. Perched on a desk, he took questions from students in the audience.

Leiden University offers ambitious students the latest knowledge and the freedom to develop their own area of expertise.

Through this research, we aim to gain a clear understanding of perceptions of safety in Leiden. The results will provide us with information about current perceptions. As Leiden’s City Criminologist Marianne Franken explains: ‘This research really focuses on Leiden’s residents. That’s why want to ask…

Leiden University offers ambitious students the latest knowledge and the freedom to develop their own area of expertise.

The Una Europa Clusters bring together leading experts and experienced staff from numerous academic and professional service departments across the Una Europa institutions.

Specially for an experiment conducted by Leiden University, public administration experts and water authority officials came together in a laboratory.

University lecturer Andrew Gawthorpe of Leiden University reflects in Global News Canada on the global implications of Donald Trump's foreign policy.

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.

‘No two days are ever the same – and that’s what makes it fun.’ But what does a head of the education office actually do? Marije Boonstra shares the many sides of her role: from drawing up timetables to launching innovative education projects, from tailoring programmes to students’ needs to international…

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

This project explores the religious lives of a Surinamese Hindu community practicing in Amsterdam at the Sri Radha Krishna Mandir from an interdisciplinary perspective.

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.

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 Faculty of Governance and Global Affairs is one of a total of seven faculties of Leiden University, located in The Hague.

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.

In this article, Thijs van Dooremalen and Philip Smith investigate how public discourse of heatwaves have shifted in British newspaper discourse, drawing on Raymond Williams’s theory of dominant, emergent, and residual cultural patterns to analyse changes in language and interpretation over recent d…

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.

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.

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

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

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?

A mere day after setting foot ashore in the Bahamas on October 13th 1492, Christopher Columbus notes the broad foreheads of the inhabitants of the Americas. These permanently altered cranial shapes are deliberately created through the application of pressure to the head of the infant in the first years…

This dissertation provides a systematic description of English and Afrikaans verbal pseudo-coordination and a formal analysis couched in the Minimalist program.

Assistant Professor at the Metabolomics group, LUMC, The Nederlands