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.

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…

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.

The International Court of Justice (ICJ) has commenced hearings on Israel’s ban on UN organisation UNRWA. Larissa van den Herik, Professor of Public International Law, commented on news programma NOS Nieuws.

For most of the past ten years, Europe has been in a state of ‘crisis’. The bank crisis mutated seamlessly via the Euro crisis to the present migrant crisis. Whereas previously the general assumption was that even closer cooperation within the European Union was a foregone conclusion, the EU is now…

Friday 22 September marked the launch of the “Investment Support Programme for the LDCs” at the United Nations in New York.

The International Workshop 'Maritime Conflicts and their Resolution in Atlantic Europe (13th-17th Centuries)' takes place at the University of La Laguna, Tenerife (Spain) from 21 to 22 April 2017.

Are you interested in the BA programme International Studies but not yet sure what it all means?

Study information

Advanced Master study programmes at Leiden Law School. Intensive one year education programmes that provides many opportunities for our talented students.

Terminating the Trade Treaty between the US, Mexico and Canada, as Trump intends, violates the treaty and also has implications for labour law, says emeritus professor of international labour law, Paul van der Heijden, in Dutch newspaper ‘Het Financieele Dagblad’.

Leiden Law School offers intensive education programmes that provide tremendous opportunities for talented students.

We are pleased to invite abstracts for a conference on ‘Counterclaims in International Law’ to be held at Leiden University on 27 June 2024, in collaboration with Queen Mary University of London.

From 29 to 30 October 2024, the Kalshoven-Gieskes Forum (KGF) and the Grotius Centre for International Legal Studies had the pleasure of hosting an inspiring authors’ workshop in The Hague for the forthcoming Research Handbook, Victims' Rights under Public International Law, edited by Dr Robert Heinsch…

To maximise your personal development, we ensure tutorials are small-scale and staff members extremely accessible. In year one, you’ll have an average of 12 contact hours, half of which comprise lectures (in English) and the remainder tutorials (optionally Dutch or English).

On 7 November 2018, Catherine Harwood defended her thesis 'Navigating Between Principle and Pragmatism: The Roles and Functions of Atrocity-Related United Nations Commissions of Inquiry in the International Legal Order'. The doctoral research was supervised by Prof. dr. L.J. Van den Herik and Prof.…

On 28 February and 1 March 2019, Stichting Bob Wessels Insolvency Law Collection (Foundation) held its first PhD Workshop on European and International Insolvency Law. The workshop attracted more than 25 applications from PhD students from all over Europe. At the workshop young researchers had a chance…

On 3 March 2022, Cambridge University Press published An Introduction to Public International Law, a co-authored textbook led by Cecily Rose.

On Monday, 18 January 2016 the Grotius Centre for International Legal Studies hosted a roundtable on the practice, process, strategy and impact of the amicus curiae in international criminal trials.

It is difficult to hold international organisations (IOs) accountable for human rights violations. Gisela Hirschmann (Institute of Political Science, Leiden University) introduces the concept of pluralist accountability, whereby third parties set the standards for IOs’ actions in relation to human rights,…

In the heart of The Hague stands the Peace Palace, home to one of the most important courts in the world: the International Court of Justice. PhD candidate Joris van de Riet spoke to 'Het Klokhuis' about the role of the Court.

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).

The main aim of the project is to collect and update on a regular basis bibliometric and patent indicators that can be used to underpin and inform analyses pursued at the European Commission (EC) to assess European and national scientific and technological performance.

Reasserting America in the 1970s brings together two areas of burgeoning scholarly interest.