The Role and Effectiveness of the G20. In this article, published in The Changing Global Order part of the United Nations University Series on Regionalism book series, author Jaroslaw Kantorowicz discusses the evolution of the G20.

Valentina Carraro explores the relationship between overlapping UN human rights institutions, specifically the treaty bodies and the Universal Periodic Review (UPR)

Misinformation has emerged as a major societal concern. But why do citizens contribute to the dissemination of falsehoods online?

This article researches the public perception of terrorist attacks by measuring the importance the public assigns to attributes of terrorist attacks.

A story of Two Mosuls, The Resurrection of the Iraqi Armed Forces and the military defeat of ISIS. In this article, published in the Journal of Strategic Studies, the authors Maarten Broekhof, Martijn Kitzen and Frans Osinga discuss the military adaptation by the Iraqi armed forces and their role in…

The Institute of Security and Global Affairs (ISGA) is a scientific institute that specialises in security issues.

In this article, Vanessa Newby, assistant professor at the Institute of Security and Global Affairs, discusses credibility in peace operations. This article argues that credibility in peace operations must be built for both deterrence and cooperation purposes.

Jaroslaw Kantorowicz, assistant professor at the Institute of Security and Global Affairs, isolated the reaction of the public to the potential breach of constitutional fiscal rules from the reaction of other players, such as the opposition, media and civil society organizations.

This article studies the influence of framing on preferences for cooperation with the EU.

In this article, Jaroslaw Kantorowicz and his coauthors analyse how recent political changes reshaped Poland’s Constitutional Tribunal and why this transformation provides important insights into contemporary democratic backsliding in Europe.

In this chapter of the Elgar Encyclopedia of International Relations, Carraro explores how expertise is defined and contested in International Relations.

Kantorowicz & Voigt examine whether federal systems, with their multiple levels of government, lead to higher constitutional compliance

Terrorism only poses a small risk to people but tends to be a major source of public fear. Through fear, terrorism has far-reaching implications for public governance.

In this article, Honorata Mazepus, assistant professor at the Institute of Security and Global Affairs, and Dimiter Toshkov, associate professor at the Institute of Public Administration, discuss whether the winner–loser gap extends beyond the political domain to subjective health and well-being as…

In this article, Eamon Aloyo argues that university supervisors should not use student evaluations of teachers as a measure of teaching effectiveness.

Jaroslaw Kantorowicz and Rok Spruk examine the contribution of institutional reforms to economic growth.

It is integral to many cluster members’ research to use Medieval and Early Modern Arts as a lens for studying the medieval and early modern periods at large:

Ramesh Ganohariti will examine legal identity in three post-Soviet aspirant states and outline four common scenarios in this article.

Are you curious about how economics, law and governance shape our society? At Leiden University, you’ll explore financial systems, public administration, international relations and legal frameworks. From international law to public policy, from global diplomacy to financial regulation: you’ll learn…

In recent years, the question why citizens (do not) support democratic innovations has attracted increasing academic attention. In this research note, Van Der Does & Kantorowicz for the first time empirically verify what drives citizens’ instrumental considerations in their evaluation of a DI.

As a university we stand with both feet firmly in the world. Internationalisation is in Leiden’s DNA: from the very foundation of our university, the ideal of the free academy has always attracted researchers and students from across the whole world.

Are you curious about how economics, law and governance shape our society? At Leiden University, you’ll explore financial systems, public administration, international relations and legal frameworks. From international law to public policy, from global diplomacy to financial regulation: you’ll learn…

In this article, Maria-Elena Kisyova, Yannick Veilleux-Lepage and Vanessa Newby shed some light on how a small but highly visible group of influencers are actively working to promote a dangerous far-right ideology.

Honorata Mazepus, Assisstant Professor at Leiden University, researched the topic of Madisonian Judgments in Five Cultures, together with three other authors.

Miles Kellerman, Assistant Professor at Leiden University, argues in a new article that governments should consider empowering financial crime bounty hunters by creating Licensed Detection Agents to address structural failures in current systems for detecting financial crime.

Electoral Systems and Turnout: Evidence From a Regression Discontinuity Design. In this article, published on the website SAGE research methods, authors Jaroslaw Kantorowicz and Tobias M. Hlobil discuss how a Regression Discontinuity Design can be executed.

In this article, Dimitrova, Gürkan and Koops presents a general framework for capturing and systematicallyanalysing critical junctures and degrees of change in EU policies.

Together with two other authors, Jaroslaw Kantorowicz from ISGA investigates the susceptibility to believing in misinformation.

This article explores how the meaning of the rule of law has evolved over the past century in UK and US parliamentary speeches, focusing on procedural (thin) and substantive (thick) conceptualisations.

The minor Global Affairs is built on two pillars of International Relations: International Security and International Political Economy. This minor aims to provide students with the tools and knowledge to understand the most important global trends and challenges.

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.

As an interdisciplinary institute in the field of Security Studies, the Institute of Security and Global Affairs (ISGA) covers various topics in its research, one of which is the United Nations and the impact of this global organization in the world.

Strategic direction of the Europe Hub lies with a Steering Committee, composed of members from several Leiden University faculties.

The following editorial comments were recently published in the Common Market Law Review.

Dr Karolina Pomorska has been awarded the Jean Monnet Chair “EU and the World” for three years (2018-2021). Jean Monnet Chairs are teaching posts with a specialisation in European Union studies for university professors, awarded by the European Commission in a highly competitive peer-reviewed proces…

Madeleine O. Hosli & Jaroslaw Kantorowicz analyze EU states' foreign policy divergence at the UN General Debate, assessing if Lisbon Treaty reforms increased EU cohesion or if states maintain distinct positions.

What does it mean to protect against disaster in the context of climate change and other cascading environmental crises?

On 5 September 2017, Alessandro Tonutti defended his PhD dissertation

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