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…

Since 2006, HJD has made an important contribution to shaping diplomatic studies as an international academic field. Our new HJD Diplomacy Reading List presents a diverse collection of analyses categorized into forty-five topics published in HJD over the years. We hope these lists prove a valuable resource…

This master’s programme focuses on understanding the causes and consequences of armed conflict between states and within states. In addition, we explore whether and how local, national and international actors and institutions can forge cooperation, prevent political and armed conflict from emerging,…

This is an Erasmus+ International Credit Mobility project of the Faculty of Humanities with three partners in Uzbekistan.

According to New York Magazine, the massive open online course (MOOC) ‘The Rooseveltian Century’ by Professor by Special Appointment Giles Scott-Smith is one of the best online courses. We asked him why you should take the course and how it came about.

This case study (in French)—conducted as part of the NWO/Clingendael Institute project ‘Plural Security Insights’—highlights how the dilemma of security provision in Tunisia is part of a crisis of trust between society and state institutions.

Why obey the state? Dorota Mokrosińska presents a fresh analysis of the most influential theories of political obligation and develops a novel approach to this foundational problem of political philosophy, an intriguing combination of the elements of natural duty and associative theories.

The Department of Child Law collaborated on a study on missing children in the European Union for the European Commission. The outcomes of the study aim to help to improve the mechanisms involved when children are missing in EU Member States.

Political scientists Huib Pellikaan and Niels van Willigen (Leiden University) use and elaborate on the theoretical insights from game theory in order to understand nuclear security in changing environment. Now that the relations between the US and Russia have deteriorated and smaller nuclear states…

Political Scientist Valentina Carraro (Leiden University) devises a framework to assess the degree to which United Nations human rights bodies provide duplicating or contradicting recommendations to states. Focusing on the case of torture, she creates an original database of recommendations delivered…

In the thesis we demonstrated an 85% state transfer efficiency between two mechanical modes coupled to a common optical mode via stimulated Raman adiabatic passage (STIRAP) in the classical regime. We also showed possibilities to manipulate quantum states of the mechanical modes via STIRAP.

Contact Biophysical Organic Chemistry/Solid State NMR

This project looks at the current practices of marriage law in Indonesia. It examines the often ambiguous views different groups hold of marriage, from local villagers in Bengkulu to women’s activists in Jakarta, and how these relate to the development of national law on the one hand and local practices…

The debate about state behaviour in cyberspace may be set in the wrong legal key.

Multinationals use loopholes in the tax treaties between different states. A possible solution would be to eliminate all these loopholes in one go by creating a central global treaty. Leiden researchers are investigating whether this kind of mega-treaty is feasible.

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…

How and why governments engage with civil society as well as how civil society organizes itself and exerts political influence constitute the key focus of the research programme Public Governance & Civil Society. As such, this research programme offers unique expertise within the field of public administration…

This 48-month project is to contribute to a solid, accessible, domestically owned knowledge base for people-centred interventions aimed at strengthening access to justice in Libya (A2JiL), and to disseminate such knowledge among stakeholders, enhancing awareness and the capabilities required to provide…

An international comparative study of the Netherlands, Belgium, Denmark, France, Germany, the United Kingdom and the United States.

Research how ‘custom’, ‘traditions’ and ‘heritages’ take on new meanings in the uplands of South and (mainland) Southeast Asia.

How did free agents in the Dutch Republic react to the creation of colonial monopolies (VOC and WIC) by the States-General? This project answers this question by looking at the role individuals played in the construction of an informal global empire parallel to the institutional empire devised by the…

On 14 October 2020, Joseph Boakye defended his thesis 'Understanding Illegal Logging in Ghana'. The doctoral research was supervised by Prof. J.M. Otto and prof.dr. J.G. van Erp (Utrecht University).

Monica Kaminska, Dennis Broeders and Fabio Cristiano have contributed a chapter to the proceedings of the 13th International Conference on Cyber Conflict (CyCon 2021), which gathers 20 articles from the law, technology and strategy domains.

On Thursday 15 February 2018, the Hazelhoff Centre for Financial Law welcomed Roel Janssen, financial and economic journalist and writer, for the fifteenth Hazelhoff Guest Lecture.

This new article by Bassant Hassib and James Shires is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

Grace Leksana defended her thesis on 26 May 2020.

How does the commodification and re-appreciation of the contiguous uplands of Northeast India, Bangladesh and Burma/Myanmar transform the relationship between these states and their upland citizens?

This book explores how changes in the patterns of cooperation and conflict among states, regional actors and transnational non-state actors have affected the rise of emerging global powers and the suggested decline of US leadership. Scholars, students and policy practitioners who are interested in the…

The place of European states and institutions in world politics is the core focus of this pillar. Research on this theme concerns European actors’ ability to promote peace, security and justice in their neighbourhood and to shape the future of global governance by translating its economic size into…

Governing Cyberspace: Behavior, Power and Diplomacy is based on a selection of papers presented during The Hague Program for Cyber Norms' inaugural conference Novel Horizons: Responsible Behaviour in Cyberspace from 5-7 November 2018 in The Hague. The volume is edited by Dennis Broeders and Bibi van…

Article by Dennis Broeders in the Journal of Cyber Policy on the (im)possibilities of addressing election interference and the public core of the internet in the UN GGE and OEWG.

How can international investment law and arbitration take account of the public interest in, and more broadly, the public dimension of, the relations between foreign investors and host States ?

The debate in Europe about digital sovereignty, technological sovereignty, data sovereignty and strategic autonomy has been building over recent years at both the EU level and the level of individual Member States. The different concepts – and their diverse interpretations – cover the sovereignty concerns…

This is an Erasmus+ International Credit Mobility project of the Faculty of Humanities with the Ivane Javakhishvili State University (TSU) in Tbilisi.

This socio-legal study focuses on the implementation of climate change response laws and policies in developing countries with a weak rule-of-law environment, and their (unforeseen) effects on vulnerable peoples’ land rights.

A global perspective on the nature and evolution of nationalism, from the early modern era to the present.

Lecture, European Union Seminar

Having encountered a series of shocks that pose an existential threat to our livelihoods, our societies have become increasingly polarized.

The research in my group addresses a range of topics related to quantum many-body physics.

Leiden University has long history of research and teaching on Asian traditions, with a focus on language and philology, history, religious studies, philosophy, law and literature. Leiden has in the last thirty years also built up an equally impressive strength in the study of modern and contemporary…

This is the Board of Advisors of CompaRe.

Scientific research on Colonialism and Slavery is done from different research programmes and different disciplines.

James Shires, Assistant Professor at the Institute of Security and Global Affairs at Leiden University, co-authored this report on the GCC's cyber resilience with Joyce Hakmeh, Senior Research Fellow of Chatham House's International Security Programme.

This project investigates the capacities of EU institutions to coordinate the responses of member states to critical events.

Ramesh Ganohariti, PhD student and Ernst Dijxhoorn, Assistant Professor at Leiden University, researched the relation between international relations and sports, with sport and sports events increasingly being used for various diplomatic and political goals.