El terrorismo como elemento generador de la mutación dela figura de la agresión: Efectos evolutivos o involutivos en el derecho internacional

International Law has a close relation with the conflict; being the first one the thesis, the second one its antithesis, and the synthesis, the dialectic exercise that characterizes relations among the nations of the world which seek to be regulated. The emergence and later acknowledgment of terrorism as a phenomenon that attempts against international peace and security, alerted the International Society, which, before the magnitude of its consequences, initiated a frontal fight against this scourge. The events that took place on September 11, 2001, undoubtedly reshaped the role of the Security Council of the United Nations in relation to both the concept of aggression and the legitimate use of force. In this context, an important discussion appears, and is related to the effects of that transformation; either on the evolutionary way of an essential dynamic international law or in its involution in the sense that the Security Council understood that terrorist acts perpetrated by an undetermined actor constitute acts of aggression, whether being an State or not state agent.