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…

The project explores the impact of the clash between defenders of a rules-based order and international law on global governance and the future of legal systems.

This course explains the functions of each international court and tribunal in The Hague. On the basis of cases and interviews with judges and lawyers, this course explores the role of these courts and tribunals and their potential to contribute to global justice.

This book presents an understanding of the concept of Countering Violent Extremism from a critical terrorism studies perspective using case studies from different countries while examining the issues it raises.

On Tuesday 17 October 2017 Alexandre Genest defended his PhD dissertation ‘Performance Requirement Prohibitions in International Investment Law’ as part of a double PhD programme at the Universities of Leiden and Ottawa. The Supervisors are Professors M.E. Koppenol-Laforce. F. Baetens (Universities…

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

On 8 July 2020, Andres Sarmiento Lamus defended his thesis 'The Proliferation of Dissenting Opinions in International Law'. The doctoral research was supervised by Prof. L.J. van den Herik and Prof. Y.A.A.S. Radi (UCLouvain).

Leiden University’s Master of International Civil and Commercial Law (L.L.M.) examines the interrelated layers of hard law, soft law, and relevant case law.

Few events have influenced our global order as intensely as the events of September 11, 2001.

This book offers readers an alternative history of the origins of the discipline of International Relations.

Our Master Law in European and International Human Rights Law (LL.M.) looks at the various human rights protection mechanisms from a comparative perspective

On 5 September 2017, Alessandro Tonutti defended his PhD dissertation

This book offers a comprehensive, critical overview of current research on knowledge and expertise in international politics that helps readers navigate the growing literature in the field and explore new research agendas.

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

On 9 April 2019, Yudan Tan defended her thesis 'The Rome Statute as Evidence of Customary International Law'. The doctoral research was supervised by Prof. dr. W.A. Schabas.

Growing public backlash against international organizations (IOs) and attacks of national political elites on the rule of law increasingly challenge governance by IOs.

On 21 February 2019, Ruben Zandvliet defended his thesis 'Trade, Investment and Labour: Interactions in International Law'. The doctoral research was supervised by Prof. dr. N.J. Schrijver.

The Future of Multilateralism addresses current challenges and future perspectives of international and regional organizations. It aims to uncover how stable the foundations of global cooperation really are, particularly in the light of the latest unilateral and protectionist practices of international…

On dinsdag 26 juni 2018, Linlin Sun defended her doctoral thesis ‘International Environmental Obligations and Liabilities in Deep Seabed Mining’. The doctoral research was supervised by Prof. dr. N.J. Schrijver en Prof. dr. E.C.P.D.C. De Brabandere.

Are you thinking about studying this Advanced LL.M. International Dispute Settlement and Arbitration? Learn more and watch the videos.

Are you thinking about studying European and International Human Rights Law? Learn more and watch the videos.

Are you thinking about studying European and International Business Law? Learn more and watch the videos.

On 9 November, Jonathan Hak defended the thesis 'Non-textual evidence in international criminal prosecutions: discovering the best practices for audiovisual materials in a digital age'. The doctoral research was supervised by Carsten Stahn and Jens Iverson.

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The International Institute of Air and Space Law (IIASL) offers PhD candidates the possibility to enroll in the IIASL PhD Track.

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…

This book questions the accepted origins of the field of International Relations (IR). Commonly understood to have emerged from the horrors of WW1 with the goal of bringing about world peace, the authors argue that on the contrary, IR came from a somewhat less noble tradition – that of the Round Tab…

Find out all you need to know about a visa and residence permit application with a member of the Admissions Office

Are you thinking about studying Global Conflict in the Modern Era? Learn more and watch the introduction video.

Jens Iverson, Assistant Professor of International Law and a Researcher in the Jus Post Bellum Project, defended his Ph.D. dissertation on 21 September 2017.

Read more about the International Network Open Science & Scholarship Communities in our Vision and Mission statements.

This inaugural lecture discusses the question: How to cooperate in the digital era?

An interdisciplinary international consortium to address critical healthcare gaps for older adults in indigenous Dayak communities has been awarded an LDE Global Support grant (INUCoST).

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…

Article by Leiden University political scientist Daniel Thomas about shifting norms for membership in international organisations.

Complex systems can be characterized as systems in which multiple components interact with each other, often in non-linear ways. The main goal of this research will be to investigate if and how the international tax system can be defined and modelled as a complex system. Approaching the international…

Peak Performance: Collaborative Crisis Management Before and During International Summits. This comparative case study probes into conditions for collaborative governance in the security organisation of international summits.

On 19 juni 2018 Matthew Gillett defended his doctoral thesis ‘Prosecuting environmental harm before the international criminal court’. His supervisor is prof. dr. L.J. van den Herik.

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

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

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