Marise Cremona is Professor of European Law at the European University Institute, Florence. Between November 2009 and June 2012 she was Head of the Department of Law at the EUI and between June 2012 and August 2013 she was President ad interim of the EUI. She is a co-Director of the Academy of European Law and general co-editor of The Collected Courses of the Academy of European Law, Oxford University Press. She has published extensively on the external relations law of the European Union, including Developments in EU External Relations Law (Oxford University Press, 2008); EU Foreign Relations Law - Constitutional Fundamentals, edited with B de Witte (Hart Publishing, 2008); and The European Court of Justice and External Relations Law - Constitutional Challenges, edited with A Thies (Hart Publishing 2014). Hans-W Micklitz is Professor of Economic Law at the European University Institute, Florence; Jean Monnet Chair of Private and European Economic Law at the University of Bamberg, Germany, Head of the Institute of European and Consumer Law in Bamberg, between July 2012 and 2015 Head of the Department of Law at the EUI, holder of an ERC grant on European Regulatory Private Law (2011-2016) and Finish distinguished professor of the Academy of Finland (2016-2020). He has published extensively on European private law and European law, including The Politics of Judicial Co-operation in the EU - the Case of Sunday trading, Equal Treatment and Good Faith, 2005, CUP, with R. Brownsword/L. Niglia/St. Weatherill (eds.), Foundations of European Private Law, Hart 2011; (ed.), The Many Concepts of Social Justice in European Private Law, Elgar 2011, with B. de Witte (eds.), The ECJ and the Autonomy of the Member States, Intersentia 2012; (ed.) Constitutionalisation of European Private Law, OUP, 2014.