Madeleine O. Hosli, Professor of International Relations, wrote this book in which she analyses the complex relations between the European Union (EU) as a regional organization and the United Nations (UN) as an international, global governance institution.

The Summer School ‘The European Union, the United Nations and Global Governance’ will focus on a range of topics relevant to interactions between the European Union (EU) and the United Nations (UN) and the EU’s role within current patterns of global governance.

Madeleine Hosli, Professor of International Relations at Leiden University, together with two other authors, wrote a chapter in Group Politics in UN Multilateralism. This chapter assesses the composition and functioning of the African Union (AU) within the United Nations.

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.

How many of our laws in the Netherlands are actually determined by the European Union? In many areas, the influence of the EU has increased. But 80 per cent – a figure referred to in 1989 by then European Commission President Jacques Delors – is a very wide estimate. Research from around 15 years ago…

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

The European Union acts as one of the most powerful economic actors in the global economy, presents itself as the most successful integration project in recent history, and deploys one of the largest diplomatic services in the world. The European Union Studies minor offers a comprehensive and multi-disciplinary…

The Master’s in European Union Studies at Leiden University offers students an opportunity to study the EU from multiple disciplinary perspectives.

Applications are now open for the Summer School ‘The European Union, the United Nations and Global Governance’ (12 - 23 June 2023) for Master-level and PhD students. The activity is supported by the European Union’s Jean Monnet programme (Erasmus+).

How do crises produce changes in specific European Union foreign policy areas, and how should we conceptualise these policy changes?

Deadline approaching: Applications are still open for the Summer School ‘The European Union, the United Nations and Global Governance’ (16 - 20 June 2025) for Master-level and PhD students. Application deadline: 15 May 2025.

From 13 to 24 June 2022, the Summer School on the European Union, the United Nations and Global Governance, supported by the Erasmus+ (Jean Monnet) Programme was held for the second time.

The researchers examine the Council of the European Union's voting behaviour between 2010 and 2021 and the impact of different independent variables.

This thesis examines the complexity of legislative decisions within the EU, with a specific focus on the Council of the EU.

Are you thinking about studying European Union Studies? Learn more and watch the introduction video.

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

This article presents a new dyadic approach to studying voting behaviour in the Council of the European Union.

The coronacrisis makes painfully clear that a transboundary crisis requires a transboundary response. The European Union could play a key role, but that has not happened so far. Political scientist Amy Verdun (Leiden University) explains why.

The Summer School ‘The European Union, the United Nations and Global Governance’ is open to Master-level and PhD students. It is supported by the European Union’s Jean Monnet program.

The Summer School will take place from 14-25 June 2021 and welcomes Master-level and PhD-level students who are interested in learning more about the interactions between the EU and the UN and the EU’s role within current patterns in global governance.

Dr. Gruni published an article on the impact on sustainable development in the EU Common Commercial Policy of recent Opinion 2/15 CJEU on the Global Trade and Customs Journal.

The article examines how Southern European member states' newspapers portray European irregular migration governance.

The Law of the European Union is a complete reference work on all aspects of the law of the European Union, including the institutional framework, the Internal Market, Economic and Monetary Union and external policy and action.

What drives public agencies’ propensity to engage in more extensive practices and/or to initiate more far-reaching mechanisms of accountability than those mandated by law? In other words, what are the drivers of voluntary accountability?

This special issue of the Journal of European Policy presents results from the research on the European Union Enlargement and its Integration Capacity. The Journal of European Public Policy is one of the leading journals in this field.

How to explain the apparent high success rates of the EU infringement procedures, which are the major tools for enforcing EU law, against the member states?

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

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

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

This project investigates the capacities of EU institutions to coordinate the responses of member states to critical events.

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

This research paper was requested by the European Parliament's Committee on Civil Liberties, Justice and Home Affairs. It was published by the International Centre for Counter-Terrorism (ICCT) in The Hague. Leiden University is one of the participating institutes in this publication and our researcher…

Introducing five papers about of the impact of crises on the governance, decision-making, and institutional design of the Euro Area, political scientists Valerie D'Erman (University of Victoria, Canada), Paul Schure (University of Victoria, Canada) and Amy Verdun (Leiden University) summarise the 'lessons…

Our project focuses on the analysis of decision-making processes in the European Union (EU) and explores how approaches and tools to understand decision-making found in both the Natural and the Social Sciences can be linked, knowledge between these traditions exchanged and synergies utilized. To explore…

Matthias Haentjens, Jouke Tegelaar and Dorine Verheij have recently published the chapter Financial Market Regulation and Supervision in the new volume of the prestigious The Law of the European Union (previously Kapteyn and VerLoren van Themaat).

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

How do processes of coalition-formation influence patterns of decision-making in the European Union?

Adopting a largely chronological approach, Gerrits links the historiography of post-war Europe and the major theoretical approaches to nationalism with analysis of key historical developments and events.

The research group Politics, Culture and National Identities 1789-present investigates a wide range of national political cultures in Europe and the Americas in the 19th and 20th centuries. Instead of only analyzing high politics (the acts of governments and political parties), the research group focuses…

On 7 May, Aleksandre Zardiashvili defended the thesis 'Power and dignity: the ends of online behavioral advertising in the European Union'. The doctoral research was supervised by Bart Custers and Simone van der Hof.

This paper investigates possible convergence of issue salience of terrorism among citizens within the European Union for ten jihadist attacks in the period 2015–2017 using Eurobarometer survey data.

Political Science: National and International Politics is a broad study with a lot of depth. You will study political issues at the local, national and international levels, from a variety of perspectives. You will be taught by renowned, committed professors. In Leiden you will find a real student city…