This PhD dissertation examines international responsibility for the crime of aggression from a public international law perspective. Under customary international law, as well as the amendments to the Rome Statute of the International Criminal Court adopted in the Review Conference in Kampala in 2010,…

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

Loopholes in international tax legislation contribute to the misuse of tax rules by multinationals. Leiden University legal experts investigate how the complex national and international tax rules can be made more consistent in order to create a better tax system.

The international legal order is in a process of transformation. But how transforms globalization the international legal order? This research programme provides a clearer framework to analyze this..

Addressing Global Challenges through International Scientific Consortia

How should the international community of states respond to genocide, war crimes and crimes against humanity? How can the perpetrators of international crimes be brought to justice? How can international crimes be prevented? How can the international community of states promote international consensus…

For both Dutch and international students, a Humanities degree provides a strong foundation for a career that crosses borders.

This edited volume explores how artificial intelligence (AI) is transforming international conflict in cyberspace.

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

Are you thinking about studying International Relations? Learn more about the programme and watch the general introduction video.

Studying change in the course of human history, in different places, through the lens of a diverse set of core themes; World History for International Studies offers readers a set of windows into different debates historians have been conducting.

Do you want to know more about the todays’ challenges in Global Affairs? Check out the second edition of the “Challenges in Global Affairs” E-book 2016!

Almost a century passed since the much-celebrated judgement in the case concerning the Factory of Chorzów was delivered. This 1928 judgement of the Permanent Court of International Justice affirmed the essential principle of ‘reparation’ in international law, claiming that ‘restitution’ is the preferred…

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in…

Are you considering a career outside of the Netherlands after following a Dutch bachelor ánd master programme? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in addition to the Dutch title Master of Science…

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in…

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in…

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in…

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist, in…

Are UN sanctions regimes in need of further formalization in terms of substantive design, procedural architecture and with a view to regulating and governing the interplay with other regimes?

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

Are you considering starting a master’s programme in Psychology at Leiden University and are you planning on pursuing a career in health care outside of the Netherlands? If so, then before your start your studies, make sure to check if your preferred country has special requirements to work as a psychologist,…

A team of researchers at Leiden University is collecting information about the methods used by researchers in the field of public international law. The research team consists of Cecily Rose, Misha Plagis, Johanna Trittenbach, and Nicholas McGuire. The goal of this research project is to understand…

This article offers an inaugural assessment of how silences implicate international law-making in cyberspace through descriptive and normative lenses.

Women in International Security -Netherlands (WIIS-NL) is an affiliate of WIIS Global. WIIS-NL Members include: professionals, civil servants, academics, NGOs, employees of international bodies and organizations, embassy staff, politicians, students, and interested members of the general public. The…

The Private International Law Department provides academic education and performs research in the field of private international law.

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

Ending the United Kingdom’s (UK) forty-seven year European Union (EU) membership has fundamentally transformed its relationship with the EU. After years of tumultuous negotiations, international law now once again governs the UK’s relationship with the EU. This has resulted in a sophisticated body of…

The Service Centre International Staff provides advice and different services to all international employees and guest researchers pursuing their academic careers in Leiden.

In this article, the authors explore how international criminal law is moving into a ‘post-critical’ phase and examine its potential for emancipatory reform.

If you are from abroad and you want to work at Leiden University, there is quite a lot to arrange.

Four famous alumni introduced their favourite films at Leiden International Film Festival.

On 18 January, Esteban Szmulewicz, a PhD candidate at the Department of Constitutional and Administrative Law, spoke on the following theme at an online seminar: 'Comments on the International IDEA report: the state of democracy in the world and the Americas in 2023. New checks and balances'.

Explore the MSc in International Politics at Leiden University: a one‑year programme focused on international conflict, crisis management, diplomacy and global cooperation.

In our European and International Business Law Advanced Master programme, you learn to decipher the hierarchy of European & international business law

2026

The International Arbitration Training Course, offered by Leiden Law School in cooperation with the Permanent Court of Arbitration, focuses on the theory and practice of international arbitration as a distinct field of the law and field of legal practice. Registration is now open!

The relationship between States and foreign corporations are regulated by international economic law and international investment law in particular. Any disputes between States and foreign corporations must therefore also be solved by reference to this body of public international law, for example when…