The program is divided in two parts. Firt one details the characters of international relations. We anlyse the origin, characters and evolution of International society. A theoretical and practical double approach. The second one, a full approach to International organisations. A special emphasis on the main IO, as ONU and specialized agencies, europeans and americans. The studen will acquire the skills to understand the International organisations, the dynamics, actors, interactions and challenges of international relations and IO in the context of globalization. We analyse the main vector of the disciplyne, as international cooperation, prevention, conflict resolution, international economic relationship and so on (environmental prevention, human rights protection, integration process support etc..).