One of the fundamental changes that have come about with the transformation of the OAU into the AU is the establishment of a comprehensive peace and Security regime. The African Peace and Security Architecture (APSA) is institutionalized within the framework of the AU Constitutive Act and the Protocol on the Peace and Security Council (PSC). APSA is a key mechanism for implementing the vision, objectives and principles of the AU. The AU has a vision of peace, integration and prosperity and APSA stands to benefit positively this pan-African vision through preventing and resolving conflicts in Africa effectively. Against this background, the book seeks to describe and analyze the importance and place of the APSA towards the Union Government of Africa and the challenges facing it as one of the most important mechanisms for the AU strategic response to conflicts and as a base ground for the Union Government of Africa.