The objective of the activity is to involve a wide-ranging audience (academics, practitioners, young researchers, policy makers) in interactive lectures delivered by renowned scholars in legal, political economy or international relations disciplines. The Lectures cover various aspects of the external action of the European Union and aim at critically assessing its role in tackling challenges in a context of global governance.The fourth Lecture Series will build on the success of the Lectures funded by the FNR (December 2013-November 2014, January-July 2015, September-December 2015). The Lecturescombine theoretical perspectives and empirical insights and involve as discussants young researchers and practitioners. The lectures are preceded by a workshop bringing together PhD students and young researchers.The renewal of the activity aims at addressing the specific question of the external perceptions of the Union as a global international actor, bringing together scholars and practitioners of European Integration, as well as specialists in the field of regional integrations, such as the ASEAN. The Lectures will put emphasis on the third countries’ perception of the European Union as a global actor contributing to a high degree of cooperation in all fields of international relations in order to achieve the external action objectives assigned to it in the Lisbon Treaty. The Lectures will contribute to the dissemination of research results and stimulate research, teaching and reflection in the field of the external action of the European Union. The Lecture Series reinforce the visibility of the teaching and research activities of the University of Luxembourg, promote the exchange of ideas and research results through inter academic discussions and actively involve members of the Court of Justice of the European Union and of European institutions and organs.