Can international organisations be held responsible for violations of international law by peacekeepers in a peacekeeping operation?

The MSc International Organisation is offered by Leiden University in The Hague. This page explains why students choose this programme and location.

Are you thinking about studying Global Political Economy? Learn more and watch the introduction video.

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

Leiden is a lively, compact student city, with a strong academic tradition and a close-knit student community. It’s also conveniently close to cities like Amsterdam, The Hague and Rotterdam, all within a 30-minute train journey.

The fifth edition of the Owada Chair Symposium, that was held in Leiden on 14 and 15 October 2025, highlighted the law and politics of international criminal justice.

International Dispute Settlement and Arbitration (LL.M.) is a postgraduate programme about international dispute settlement & arbitration in international law.

This project studies social distance—the degree of sympathetic understanding that exists between people—in relation to state foreign policy making. Does, and if so how does, social distance shape political biases, aid narratives, and, ultimately, state foreign policy priorities and decisions?

Taking the changing landscape of international cyber security and cyber conflict as a point of departure, The Hague Program on International Cyber Security focuses on the various modes of governance that states and other actors can bring into play to deal with and shape the strategic changes and challenges…

How is student life in the Hague as a Population Health Management student?

The Leiden University Centre for International Relations (LUCIR) is a multi-disciplinary platform promoting research and education on international relations at Leiden University.

On 18 April, Alexandre Tavadian defended the thesis 'The International Civil Service: Redefining Its Independence'. The doctoral research was supervised by Niels Blokker and Brian McGarry.

On 23 February 2022, Cale Davis defended the thesis 'Prosecutorial Discretion in International Criminal Justice'. The doctoral research was supervised by Prof. C. Stahn en Dr. J.C. Powderly.

This book offers a comprehensive analysis of the international law applicable to cyber operations, including a systematic examination of attribution, lawfulness and remedies. It demonstrates the importance of countermeasures as a form of remedies and also shows the limits of international law, highlighting…

Are you thinking about studying the Advanced LL.M. Public International Law? Learn more and watch the videos.

Bachelor

William Lippert investigates the effect of delegation to an agreement executor on success of conventional arms control agreements in Europe.

The International Institute of Air and Space Law is one of the leading international academic research and teaching institutes in the world, specialising in legal and policy issues regarding aviation and space activities in the broadest sense of the word.

News

The Basics and Applications to Plant Sciences will be held physical. See below for more information.

Five mathematics students from Leiden University and their coach stood out this summer in Bulgaria at the IMC: the International Mathematics Competition for university students. Lance, Ryan, Casper, Mads and Lars tackled tough maths problems and also made the most of the Bulgarian sunshine.

Discover the admission requirements for the MSc in International Politics at Leiden University in The Hague: bachelor degree, 80 ECTS in political science, and English language proficiency (IELTS/TOEFL).

Discover the admission requirements for the MSc International Organisation at Leiden University in The Hague. Includes 80 ECTS, English test scores (IELTS/TOEFL), and supporting documents.

This research explores how international organisations responded to the humanitarian and human rights challenges brought about by COVID-19.

Are you thinking about studying Public Administration: International and European Governance? Learn more and watch the videos.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.

Leiden is the ideal city for students. There is a wide variety of activities you can do next to your studies, to make the most out of your student life.