Conference on European External Action Service at the Institute of Foreign Service of the Nation-Argentina. Buenos Aires. Conference on European External Action Service at the Institute of Foreign Service of the Nation-Argentina. Photo: Dr. Mario Torres Jarrín, Director of European Institute of International Studies and Ambassador María Celeste Koch, Director ISEN (Institute of Foreign Service of the Nation-Argentina) Our director Dr. Mario Torres gave a lecture on European External Action Service to students and members of the Institute of Foreign Service of the Nation-Argentina.