The creation of an international (intergovernmental) organisation such as IGAD is the realisation that problems faced by States can only resolve or can be best resolved through cooperation. The advantages of cooperation and the costs of non-cooperation are increasingly understood and even characterised by many States particularly in the post-Cold War era. Within the international system, mainly as adjuncts of the State system, international organisations become an indispensable forum for debating problems, whether by consultation or negotiation, adopting and developing international rules on matters of common interest (for instance, providing a mechanism for dispute resolution and prevention). On other occasions, international organisations can and have to compete with those very States created them. For years, the IGAD countries have been better known for wars and rivalries rather than cooperation under international rules. Against this background, the Heads of State and Government of the East African sub-region decided to establish a forum for their expanded cooperation that embraces socio-economic and political fields. The establishment of IGAD and its priority mission in sustainable development, peace, stability and security (inter- and intra-State conflict resolution and prevention) in itself presented an era of dialogue and hope for the sub-region. The creation of IGAD by the Member States was brought about by the recognition of their collective political will and common interest. The will and determination to cooperate and consequently lay down basic international rules and frameworks of cooperation itself was a prerequisite for the creation of and granting with powers and/or functions to IGAD as an organisation. This was the basic foundation and rationale for establishing IGAD. The challenge then becomes, as the hitherto experience has shown, the commitment to such international cooperation from each IGAD Member in accordance with the Agreement Establishing IGAD. The logical corollary to the will to establish IGAD is the need to take certain measures by IGAD's Member States on the basis of the establishing agreement in order to achieve the objectives for which it was created. In fact, the conclusion of the treaty by which IGAD was created is the beginning, not the end, of commitment whether internationally or nationally through the principle ofpact sunt servanda. The uncertainty in law and practical nature relating to IGAD is that if Member States do not want to cooperate and grant a power to the Organisation they created, then the Organisation cannot work properly. Moreover, the likely impact of the political commitment and genuine cooperation of the Member States of IGAD remains open to question. The creation of IGAD as an international organisation and its law and functions are made for a purpose, which is the achievement of the common goal and interest of the Member States (prosperity and peace). This purpose for which IGAD was created ought to be facilitated for its fulfilment. IGAD Member States, however, tend to pay and have paid little attention to the Organisation and its purposes after they created it in terms of their behaviour towards IGAD's principles and objectives and their compatible synergetic system from the domestic aspect of the national governance. Thus, I have chosento investigate these factors that have influenced the IGAD's creation vis-a-vis its status as an international organisation and its efforts in peace, stability and security missions.