The Lauterpacht Centre for International Law (LCIL), University of Cambridge hosts a regular Friday lunchtime lecture series on key areas of International Law. Previous subjects have included UN peacekeeping operations, the advisory jurisdiction of the International Court of Justice, the crime of aggression, whaling, children and military tribunals, and theories and practices for proving individual responsibility criminal responsibility for genocide and crimes against humanity. This lecture, entitled 'Territorial Sovereignty by Treaty: A Study of the Agreements Between Colonial Powers and Local Political Entities', was delivered at the Lauterpacht Centre on Friday 14th October 2016 by Dr Mamadou Hébié, Assistant Professor of International Law at the Grotius Centre for International Legal Studies of Leiden University.