Daniel is an Assistant Professor of Public International Law at the Grotius Centre for International Legal Studies at Leiden Law School. He acts as Academic Coordinator of the Advanced LL.M. on International Dispute Settlement and Arbitration and Director of the Leiden International Administrative Law Clinic.
Before joining Leiden University, Daniel worked at the International Court of Justice as an Associate Legal Officer for Judge Abdulqawi A. Yusuf. He was awarded a Ph.D. in Law from the University of Cambridge, where he was a member of Gonville & Caius College and a recipient of the WM Tapp Studentship.
Daniel’s first monograph, Comparative Reasoning in International Courts and Tribunals (Cambridge University Press 2019) won the European Society of International Law Book Prize in 2020. He has published articles in the British Yearbook of International Law, the N.Y.U. Journal of International Law & Politics, the Journal of International Dispute Settlement, and the Journal of World Trade & Investment, amongst others. Daniel also co-edited Interpretation in International Law (Oxford University Press 2015) with Andrea Bianchi and Matthew Windsor.
Daniel’s current research focusses on compliance with international legal obligations, exploring how insights from the behavioural social sciences might be used to understand the behaviour of actors in international law. His current research is funded by the Norwegian Research Council as part of the COPIID project and by the Leids Universiteits Fonds.
In 2022, Daniel founded the Leiden International Administrative Law Clinic, in which students assist lawyers that give pro bono advice to those that work for international organisations. He is also co-authoring a treatise on international administrative law, which will be published by Cambridge University Press.
Daniel is a member of the Board of the European Society of International Law, a member of the Editorial Board of the Leiden Journal of International Law, a member of the Advisory Board of the International Community Law Review, and a member of the ISDS Academic Forum. He also acted as co-rapporteur of the International Law Association Study Group on the Content and Evolution of the Rules of Interpretation.
At Leiden, Daniel acts as Academic Coordinator for the Adv. LLM in International Dispute Settlement and Arbitration.
- External Examiner