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…

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

The Advanced Master's specialization International Criminal Law at Leiden University examines international criminal law and international criminal procedure.

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.

Our Master Public International Law (L.L.M.) you will gain understanding of the legislation that governs international relations in a complex global society

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.

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…

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?

This page provides an overview of the MSc International Organisation specialisation at Leiden University (The Hague). Includes curriculum, thesis seminar, small-group teaching and internship possibilities.

The development of space resource activities is happening now. In the absence of a clear framework to govern these activities, there is a need to examine the concepts that are being discussed in order to ensure that they meet existing treaty obligations regarding on-orbit operations and space resource…

The organ in the Academy Building is 25 years old. University organist Jan Verschuren and tuner Bert Crama talk about the long history of university organs, improvising with short cortèges and their love for this organ.

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.

Learn about the MSc in International Politics at Leiden University: programme structure, key courses, thesis seminar and small-group instruction in The Hague.

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.

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. Registration is now open!

This book is the first to incorporate current academic literature and case law on European, transnational, and international media law into a comprehensive overview intended primarily for students.

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

Leiden University’s Master of Laws in International Children’s Rights (LL.M.) looks at human rights laws for children from a comparative perspective.

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

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.

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Leiden University’s Master of Laws in Advanced Studies in International Financial Law (L.L.M.) examines the complex, international and multidisciplinary area of law and finance: markets, regulation and a sustainable society.

The main objective of the Telders International Law Moot Court Competition is to challenge students to excel in international law, consequently testing their creativity and powers of persuasion in a friendly competition. Students and academic staff throughout Europe consider participation to be a great…

Chat with a current MSc International Organisation student at Leiden University and get first-hand insights into the programme, student life, study abroad and application experience.

Chat with a current MSc International Politics student at Leiden University to get firsthand insights into the programme, student life, study abroad and application process.

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

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

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

Learn how to apply for the MSc International Politics at Leiden University: step-by-step procedure, submitting documents via Studielink, and follow-up guidance.

Learn how to apply for the MSc International Organisation at Leiden University, including steps for submitting your documents, using Studielink, and following up.

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.

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

Helen Duffy, Professor of International Human Rights and Humanitarian Law at the Grotius Centre for International Legal Studies, has been named ‘Lawyer of the Month’ for April 2026 by Scottish Legal News, recognising her global human rights work and her unique combination of academic expertise and strategic…

On 30 June 2016, Eesa Fredericks is expected to defend his Ph.D.-thesis ‘Contractual Capacity in Private International Law’ in Leiden. Supervisors are prof. Sierd J. Schaafsma (Leiden) and prof. Jan Neels (Johannesburg).

Note: MSc International Organisation application deadlines at Leiden University are 1 April for students requiring a visa, and 15 May for others.

Note the application deadlines for MSc International Politics at Leiden University: 1 April for visa-required applicants and 15 May for EU/EER applicants, with separate housing deadlines.

Explore the extra challenge options for the MSc International Organisation at Leiden University: Honours education, Leiden Leadership Programme and interdisciplinary master classes.

Explore the extra challenge options for the MSc International Politics at Leiden University, including honours tracks, leadership programmes, and interdisciplinary seminars.

International organisations that represent collaborations between States are becoming increasingly more powerful, and they have an increasing impact on our daily lives. For example, the European Court of Human Rights in Strasburg established that minors have a right to legal aid immediately following…

Are you thinking about studying this Advanced LL.M. International Children's Rights? Learn more and watch the videos.

Discover how to prepare for the MSc International Organisation at Leiden University: orientation activities, academic resources, visa guidance, and student support services.

Prepare for the MSc International Politics at Leiden University: orientation sessions, academic resources, visa guidance and student support – everything you need before you start.

The International Criminal Court’s response to contestation by African states parties