Abstract
The International Relations represents the interactions between actors within the international system. Norms and rules exist in international system. The only actors are states and we consider that each actor has its own role. In every state, we need to consider five basic social values which are: security, freedom, order, justice and welfare.
So, we will try to analyse the issue of terrorism and security since 9/11 in 2001 on the international relations. We will first try to have an overview about what is really the 9/11 with the help of an historical review and the differents aftermaths. To in a second time make a critical analyse with the help of the different statement and theory of international relations.
