Professor James A. Green has been awarded the European Society of International Law Book Prize 2017 for his monograph The Persistent Objector Rule in International Law (Oxford University Press, 2016). This prestigious prize is awarded to the best book published in the preceding year on any topic of international law. James received the award in Naples, at ESIL’s annual conference (7-9 September 2017). As part of the conference programme he discussed the book with Professor Nico Krisch (Graduate Institute of International and Development Studies, Geneva), and then was formally presented with the award itself by ESIL president Professor André Nollkaemper (University of Amsterdam) at the conference dinner.