Conference organization
17 May 2019: ‘Recht en technologie: Vraagstukken van de digitale revolutie’ (30th anniversary conference, study association Mordenate College, Leiden).
Professional

29 November 2025: ‘Immanuel Kant and Carl Schmitt on War and Hegemony in International Law’ (AjV/DGIR conference on Post Hegemonic International Law, Zürich).
20 June 2025: ‘Unjust Enemy or Enemy of All Humanity? Immanuel Kant’s Critique of Grotius and Carl Schmitt’s Rejoinder’ (conference on Grotian Law and Modernity at the Dawn of a New Age, The Hague).
9 May 2025: ‘The International Legal Order and Its Critics: Immanuel Kant and Carl Schmitt on the Right to Wage War’ (workshop ‘Rules for a lawless world? The international legal order in an age of great-power struggle for normative primacy’, Leiden).
10 December 2024: ‘Kant on self-determination in international law’ (Winter School of the ECPR SG on Kantian Political Thought, Colchester).

6 December 2024 (with Filip Lubinski): ‘Kant’s Theory of Law and Ordoliberal Competition Policy’ (NOUS/Walter Eucken Institute workshop on Immanuel Kant as an Inspiration for Ordoliberalism, Freiburg im Breisgau).
9 September 2024: ‘Self-determination in international law: A Kantian perspective’ (14th International Kant Congress, Bonn).
8 September 2023: ‘Revenge of the Schmitt: Star Wars and parliamentary democracy’ (GikII Conference ‘Dancing with the AI Stars: Legal Moves in the Rhythm of Technological Change’, Utrecht).
22 June 2023 (with Femke Klaver): ‘The EU and Russian Aggression: Perspectives from Kant, Hobbes, and Machiavelli’ (ESIL Doctoral Workshop ‘The EU’s Response to Russia’s Invasion of Ukraine: International and European Perspectives’, Leiden).
16 June 2021: ‘Free movement of British lawyers in the EU after Brexit’ (3rd Leuven-Edinburgh-Maynooth Brexit Seminar).
Popularizing

5 November 2025: ‘Het Internationaal Gerechtshof’ (lecture for student association A.S.V. Prometheus, Leiden).
21 September 2024: ‘Wat is het Vredespaleis?’ (event for children on 125 years of the Hague Peace Conferences, The Hague).
24 January 2024: ‘Wat Star Wars ons kan leren over het recht’ (lecture for student association A.S.V. Prometheus, Leiden).
14 April 2023: ‘Wat Star Wars ons kan leren over het recht’ (lecture for student association V.G.S.L. ‘Franciscus Gomarus’, Leiden).
19 December 2019: ‘The End of History: Fukuyama’s Afterparty’ (lecture for study association S.V. DIQIT, Leiden).
28 September 2017: ‘Wat Star Wars ons kan leren over het recht’ (lecture for study association Mordenate College, Leiden).