David Phinnemore is Professor of European Politics at Queen's University Belfast and Visiting Professor at the College of Europe. He has published widely on the enlargement of the European Union and EU treaty reform. He is author of The Treaty of Lisbon: Origins and Negotiation (2013) Alex Warleigh-Lack is Professorial Research Fellow at the United Nations University (UNU-CRIS, Bruges), Belgium. He held Chairs at the University of Limerick, Brunel University London and the University of Surrey, where he was also Jean Monnet Chair. He was the Chair of UACES, the world's largest EU studies association, from 2006-9. Including this one, he has written and edited/co-edited thirteen books in the fields of EU studies and comparative regional integration.