Memoria (licenciado en ciencias jurídicas y sociales) / No autorizada por el autor para ser publicada a texto completo / Producto de los acontecimientos acaecidos en el plano mundial, ampliamente difundidos, se ha puesto en boga la utilización indiscriminada de la palabra terrorismo. Creemos que el concepto de terrorismo es uno de los mayores problemas a los que se enfrenta la Ciencia del Derecho en la actualidad. Multiples han sido los esfuerzos por precisar una acepción que cumpla con todas las expectativas políticas, sociológicas y jurídicas, en atención a las diferentes formas materiales del terrorismo hoy en día. En este sentido, la jurisprudencia de la Corte de Apelaciones de Santiago, en un fallo emblemático y trascendente, otorga una definición de lo que debe entenderse por terrorismo "aquellos actos contra la vida, integridad corporal, salud o libertad de las personas, de destrucción o interrupción de los servicios públicos o de destrucción o apropiación del patrimonio que verificamos sistemáticamente tiendan a provocar una situación de terror que altere la seguridad o el orden público con fines políticos

The objective of this thesis is to analyze whether the EU can be considered as a &lsquo / limited&rsquo / military/strategic actor or as a civilian actor in the Post-Cold War international security architecture. In this framework, the impacts of the September 11 terrorist attacks and the US-led war in Iraq on the EU crisis management capabilities are analyzed more specifically. In this framework, firstly, the historical dynamics of European foreign and security policy from the Post-World War II period to the Post-September 11 period are analyzed. Secondly, the EU&rsquo / s changing role in the international arena together with its crisis management capability is evaluated. Thirdly, the EU&rsquo / s international actorness in the Post-September 11 era is discussed with a special reference to the US-led war in Iraq. In this general framework, following a brief analysis on reactions of the US and the EU against global terrorism, crisis management strategy of the EU during and after US-led war in Iraq is analyzed in detail. The last part allocated to, a critical analysis of the security actorness of the EU is made in order to conceptualize it and to draw a more theoretical framework. Moreover, it is mentioned in this thesis that while having triggering effect on the CFSP and ESDP, the 9/11 events and the US-led war in Iraq provides the emergence of new methods for crisis management and the European Security Strategy. Accordingly, considering the new international security context beginning with the end of Cold War period and transforming to another dimension by means of September 11 attacks, the main argument of this thesis is that the EU still tends to be a civilian actor as it was before and it is envisaged to be so in the foreseeable future despite its latest attempts to develop its common security and defence policies.