Manfred Hafner is Adjunct Professor of Energy Economics and Policy at Johns Hopkins University, School of Advanced International Studies (SAIS Europe) in Bologna, Italy, and at Sciences Po Paris, Paris School of International Affairs (PSIA), France. He directs the Energy Scenario and Policy research programme at the Fondazione Eni Enrico Mattei (FEEM), Italy, and is an Associate Research Fellow at the Centre for Research on Energy and Environment Economics and Policy (IEFE) of Bocconi University, Italy. He is also Vice-President Consulting at Enerdata, France. He has a 30-year working experience on energy issues for governments, international organizations and industry. Simone Tagliapietra is Senior Researcher at the Fondazione Eni Enrico Mattei, Italy, and Research Fellow at Bruegel, Belgium. An expert in international energy issues, he also conducted research at the Istanbul Policy Center at Sabanci University, Turkey, and at the United Nations Economic Commission for Europe in Geneva, Switzerland. He received his PhD from the Università Cattolica del Sacro Cuore in Milan, Italy, where he currently teaches energy economics and policy. His most recent book is Energy Relations in the Euro-Mediterranean: A Political Economy Perspective (Palgrave).