Thomas Diez is Professor of Political Science and International Relations at the University of Tübingen.

Thomas holds a PhD from the University of Mannheim in 1999. From 1997 to 2000, he was Research Fellow at the Copenhagen Peace Research Institute and subsequently, from 2000 to 2009, Lecturer, Senior Lecturer and then Professor of International Relations and Head of Department at the University of Birmingham. He joined the University of Tübingen in April 2009, and in September 2009 he received the Anna Lindh Award for his contribution to the field of European Foreign and Security Policy Studies. Thomas was President of the European International Studies Association (EISA) 2015-7. He has also taught in Copenhagen, Aarhus, Munich and Victoria (BC).

Thomas has written several publications, including The EU, Promoting Regional Integration, and Conflict Resolution (co-editor, Palgrave, 2017), The Securitisation of Climate Change (co-author, Routledge, 2016), A Different Kind of Power? The EU’s Role in International Politics (editor, IDebate Press, 2014), Key Concepts in International Relations (co-author, Sage 2011), An Introduction to International Relations Theory: Perspectives and Themes (co-author, third edition Pearson 2010), European Integration Theory(co-editor, second edition Oxford UP 2009) and Cyprus: A Conflict at the Crossroads (co-editor, Manchester UP 2009).