Harald Müller Senior Associate at PRIF and Supervisor of Peace Research Center Prague. He was Executive Director of Peace Research Institute Frankfurt (PRIF, 1996- 2016) and Professor for International Relations and Peace Studies, Goethe University Frankfurt (1999-2016). Dr. Müller served as Vice-president, EU Consortium for NonProliferation and Disarmament, as Chair, UN Advisory Board on Disarmament and as Co-chair, Working Group on Peace and Conflict, Planning Staff of the German Foreign Office. He was member of the German delegation to Review Conferences of the Nuclear Non-proliferation Treaty from 1995-2015. He is co-editor (with Carsten Rauch) of Great Power Multilateralism and the Prevention of War. Debating a 21st Century Concert of Powers (2018).