1. Associate Professor of Law and Director of the LLM Programme, University of Hong Kong Faculty of Law; Visiting Associate Professor of International Law, The Fletcher School of Law and Diplomacy, Tufts University. The author thanks Lea Brilmayer, Olufemi Elias, Caroline Elkins, Tom Johnson, Edward Kwakwa, Makane Mbengue, Kingsley Moghalu, Erin Mosely, Firew Tiba and anonymous reviewers for their encouragement and feedback on earlier drafts of this article.