The image of the events of 11 September is still very fresh in the memory immediately of millions of people around the world, no matter what is the first thing we come to mind, the terrorist attack that day at the World Trade Center and Washington has been immortalized in the history of humanity because they have no precedent. The implications which brought with it the 11-S has been the reconfiguration of the international system since the occurrence of these acts of violence, which have produced a new kind of war in which the use of weapons is no longer sufficient and, on the other hand, the fragility of the world’s first power revealed the inability of the imperial paradigm to ensure and sustain the peace at the international level. The lack of a more precise definition of terrorism and their types is due in large part to which such acts do not follow a single pattern, i.e., all terrorist attacks over the past decades have varied in time, form, and background. This situation obstructs the opportunity to know the exact number and the characteristics of terrorist bombings at the international level, in the words of Jose Aranda (2002), that lack of definition prevents us from an analysis on differential traits that could explain the fact that some countries are victims of some kind of terrorism and others will be free of it. Terrorism in its extreme form is not a theme or a recent development.
During the wars of independence of the new States, which were constituted as such in the 20th century, the practice of terrorism was widespread. The struggle for the independence of Algeria, for example, led to the territory of France the scourge of nationalist terrorism (Godoy, 2001: 38). On the other hand, Al-Qaida is not the only terrorist group in the world, along with this there is also the ETA in Spain, the IRA in Ireland, the Red brotherhood in Turkey, Tupac Amaru in Peru and the Zetas in Mexico just to mention some.