Although the General Data Protection Regulation (GDPR) harmonizes the protection of personal data across the EU as of May 2018, its open norms in combination with cultural differences between countries result in differences in the practical implementation, interpretation and enforcement of personal…

A thorough description of the relationships among languages and their social environment in a given context, reflecting an ecological perspective, involves attention to the agency of local actors, and the policies, discourse, and ideologies that surround them.

This project explores the ongoing acceleration of overlapping systemic crises and security threats and their interactions with local, national, and regional processes in a closely interconnected world.

Eva Michaels & Monika Sus examines European Strategic Autonomy (ESA) as the EU’s response to the fragmentation of the Liberal International Order.

How can we understand the implementation of EU policy and what challenges are involved?

Smart digital infrastructures predicated on myriads of sensors distributed in the environment are often rendered as key to contemporary urban security governance to detect risky or suspicious entities before or during a criminal event takes place. At the same time, they often involve surveillance of…

The Public Policy and Innovation department of the Institute of Public Administration focuses on shaping, implementing, and evaluating policy through innovative approaches. Our goal is to tackle complex societal challenges by exploring technological advancements and creative policy tools.

From the smallest level of interaction among families and close friends, over the meso-level of schools, shops, churches, religious communities and companies, to the highest level of nation-states and international organisations: Language Policy and Planning (LPP) is everywhere!

Eva Michaels & Monika Sus examine strategic autonomy in EU foreign policy, tracing evolution from the 1998 Saint-Malo Declaration to its current focus.

The NWO-funded Vidi project “American foreign policy and liberalism” challenges the idea that the United States has created and sustained a “liberal international order” since World War II. It instead explores the ways in which illiberal ideologies – such as those underpinning racial hierarchy at home…

This book focuses on transnationalism as a key concept to evaluate how Europe responds to cross-border security challenges.

This project is part of a broader research agenda aiming to better understand the relationships between the development of contemporary security concerns and the evolution of forms of security cooperation and crisis governance.

How can we promote social cohesion in a society that is culturally and religiously diverse?

In this paper, Kantorowicz aims to track the persistent effect of former partitioning borders on property tax rates in Poland.

An experimental and microwear approach to Early Iron Age vessel biographies

Political scientist Corinna Jentzsch (Leiden University) about the organisation of rebel and government auxiliaries in the civil war in Mozambique (1976–1992).

Sentencing is becoming increasingly complex for the courts. Legal scholars and criminologists from Leiden document the process of sentencing in the Netherlands. They use this knowledge to advise legislators and those who implement this legislation on how to make sentencing more consistent and effect…

The Leiden Leadership Centre brings academia and practice together by organising events on public leadership – such as Leiden Leadership Lunches, webinars, (international) conferences, and the Leiden Leadership Podcast.

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. The announcement for the next edition is set for December 2025, with registration beginning in January 2026.

Akbik and Diessner expand the classic typology of police-patrol and fire-alarm oversight with two new categories: planning bureaus and ambulance chasers.

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

Legitimacy is generally a term that is associated with the state. The term surfaces when there are problems with state legitimacy—when it is lacking or absent. This present volume attempts to think through the relevance of the concept of legitimacy for other political actors than the state.

On 22 November 2018, Els De Busser spoke at a panel during the conference

Study information, Experience Day

In this article, Kohei Suzuki examines how bureaucratic politicization and closedness are associated with the turnover intentions of bureaucrats in 36 countries.

The linguistic project constitutes the connection between the two other subprojects. It consists of two parts.

My research project aims to analyze reasons of the European Union’s (EU) inadequacy to develop a strong Common Security and Defense Policy (CSDP) with regard to the role of main EU member states, namely Germany and the United Kingdom (UK) and find the answer of how the EU overcome the CSDP question…

Criminology and Security Policy is a challenging Dutch-taught master's programme at the renowned Leiden Law School of Leiden University. This programme – with its multidisciplinary perspective - focuses on the security issues in society and the development of effective and legitimate policy in order…

This book explores the intellectual history of the Dutch empire from the sixteenth century to the postcolonial era, going beyond systemic thinkers to understand how empire was perceived in day-to-day life. It takes a transnational and transimperial approach to the Dutch empire, connecting European,…

This edited volume draws from papers presented at the conference Closing the Gap | Responsibility in Cyberspace: Narratives and Practice, organized in June 2022 at the Egmont Palace in Brussels, Belgium, by Leiden University, as part of the EU Cyber Direct project.

How can we gain insights in the connection between teaching practices and theoretical elaborations of purposes of education?

In this book, Sarah Giest, Assistant Professor at the Institute of Public Administration, provides insight into the collaborative and absorptive capacities needed to provide public support to local innovation through cluster organizations.

The Latin America and Caribbean Security and Intelligence Network (LACSIN) brings together scholars, practitioners, government agencies and the diplomatic community to develop novel and interdisciplinary approaches to addressing key areas of security and intelligence in Latin America and the Caribbe…

My research focusses on site-specific compositional and performance practices of music for organ and electronics and their musical-spatial values.

The book offers different theoretical perspectives to help examine the process of public sector reform. In addition it gives an overview of the major trends in the core areas of the functioning of the public sector.

This project looks at the current practices of marriage law in Indonesia. It examines the often ambiguous views different groups hold of marriage, from local villagers in Bengkulu to women’s activists in Jakarta, and how these relate to the development of national law on the one hand and local practices…

In 2021, the National Cyber Security Centre (NCSC) asked Leiden University to conduct a rapid review of best practices and possibilities for follow-up research on the integration of behavioral sciences in security by design methodologies and projects. This academic field is called security by behavioral…

This collection brings into conversation several kinds of scholarship on medieval authorship which have tended to remain separate over the last two to three decades, a period of steadily increasing scholarly interest in this topic.

The decades around 1800 constitute the seminal period of European nationalism. The lin­guistic corollary of this was the rise of standard language ideology, from Finland to Spain, and from Iceland to the Habsburg Empire. Amidst these international events, the case of Dutch in the Netherlands offers…

This book reveals how one publishing firm's editorial strategy helped to legitimate European colonialism in the early modern era.

Does foreign aid promote human rights?

Cognitive enhancement reflects the use of any (legitimate) means such as for example food supplements to reach one’s personal best.

This book describes the changing roles of traditional authorities in combatting contemporary security challenges.

Both Europe and Latin America face challenges globally and at home. Conflicts over land and resources have been resurgent in recent years.

Gendered dynamics and assumptions are prevalent throughout the field of cybersecurity.

In early medieval England, there was an interest in the history of the Roman Empire and kings adopted such imperial titles as 'imperator' or 'basileus'. How can we explain this interest and what functions did imperial ideas and the reception of the classical world serve in early medieval England?

This anthology contributes to a historically grounded understanding of the complex relationship between Christian missions and the roots of humanitarianism and its contemporary uses in a Middle Eastern context.

Shafa’Atussara Silahudin defended her theses on 18 May 2021.