- Emeritus Professor of Political Science, Department of Political and Social Sciences, University of Catania.
- Professor of Political Science and International Relations, Department of Political and Sociale Sciences, University of Catania (1990-2017).
- Jean Monnet Chair Ad Personam (Political Science), Department of Political and Social Sciences, University of Catania (2012- ).
- Instructor of the “IR and Security” Seminar of the ‘Scuola Superiore di Catania’, 3-24 April 2020.
- Chair of the Political Science Committee for the National Scientific Certification (ASN), 2016-2018, Italian Ministry of Education, University and Research.
- Principal Investigator, Project 4.2. Managing the Immigration Crisis of “TransCrisis: Enhancing the EU’s transboundary crisis management capacity”, research funded under the European Commission’s Horizon2020 programme (2015-2018).
- Principal Investigator, Research Project “Military Humanitarian Operations at a Crossroad? The Mare Nostrum Operation, University of Catania Fund for Research FIR14 (2015-2017).
- Expert Peer Reviewer, Social and Political Sciences, Italy’s National Agency for Scientific Evaluation (ANVUR), 2014.
- Chair of ReShape, The EU Action in Reconstruction, Security, Humanitarian Action and Protection in Emergencies, Jean Monnet Action, University of Catania (2013-)
- Principal Investigator, University of Catania Research Group, PRIN Project on The Italian Foreign Policy in front of the new challenges of the international system: actors, institutions and policies, funded by the Italian Ministry for Education, University, and Research (MIUR), 2013-2015.
- Chair, MA in Global Politics and Euro-Mediterranean Relations, Department of Political and Social Sciences, University of Catania (2010-2014)
- Program Chair of the Third Global Studies Conference, World International Studies Committee (WISC); (Portugal), August 17-20. 2011.
- Director of the International PhD Program Global Politics and European Integration, Advanced Studies School of Catania, University of Catania (2008-2011)
- Chair of the Italian Political Science Society (SISP), 2005-2007.
- Project Leader of The European Union Neighbourhood Policy, University of Catania (2004), co-funded by the European Commission, Jean Monnet Project – Heading A-3022.
- Chairman of the Jury of the Stein Rokkan Prize for Comparative Social Science Research, of the UNESCO International Social Science Council (2003-2007)
- Director of the Graduate Course on “EU Governance and International Politics”, Department of Political Sciences, University of Catania (2005-2010)
- Director of the Undergraduate Course on “Politics and International Relations”, Department of Politcal Sciences, University of Catania (2001 -2004)
- Director of the research “The security and defence policy of the European Union after the Treaty of Amsterdam” sponsored by CeMiSS, Centro Militare di Studi Strategici (2000)
- Director of the Postgraduate Master on Euro-Mediterranean Partnership Studies of the High School of the University of Catania (2000)
- Robert Schumann Professor, Chinese Academy of Social Sciences, Beijing, EU-China Program of High Education (October 1999)
- Director of the MURST National Research Programme on Evolution of security in the world system (1999-2001)
- Member of the Executive Committe of the European Consortium for Political Research, ECPR (2000-2006)
- Member of the Govening Council of the International Studies Association; ISA (1999-2000)
- Member of the Steering Group of the Independent Commission for the Comprehensive Review of the Institutions and Procedures of the Union (1998-1999)
- Co-ordinator of the Jean Monnet Centre of Excellence “EuroMed” of the University of Catania (1998-)
- Director of the PhD Course of International Relations, University of Catania (1995-2002)
- Member of the Directive Board of the Italian Society of Political Science (SISP) (1998-2010)
- Director of the Summer School on The Mediterranean and the New International Order, EuroMed Centre, Department of Political Studies, University of Catania (1998 and 1999)
- Director of the Department of Political Studies of the University of Catania (1991-1997)
- Head of the International Studies Program in the Department of Political Sciences, University of Catania (1988-)
- Convenor of the Standing Group on the European Union of the European Consortium for Political Research (1995-2000)
- Vice-President of the AUSE (University Association of European Studies) (1994-96)
- Member of the Steering Committee of the Standing Group of International Relations of the European Consortium for Political Research (1995-)
- Research Fellowship of the EEC Commission on European social cleavages and the development of EC politics (1984/85).
- Fellowship of the International Studies Summer Program of the Hoover Institution, Stanford (California), 1991.
- Scientific Organizer of the 5th Annual Conference of the AUSE (Associazione Universitaria Studi Europei), “The New Constitution of the European Community” (Catania, October 8-9, 1993).
- Scientific Organizer of the Conference on “EU 1996” of the AUSE (Associazione Universitaria Studi Europei), Catania, October 20-21, 1995).
- Fellowship in Political Science, University of Florence (1970/1972)
- Researcher in International Relations, University of Florence (1973/1977)
- Professor of International Relations, Department of Political Sciences, University of Palermo (1991/92 – 1995/96 )