This paper seeks to understand the nature of cooperation between the UN and other IGOs in ongoing conflicts. It will examine the security framework in which these multilateral arrangements were created, the gaps they were trying to cover, and the problems and areas of opportunities. It will use the AU-UN partnership in Africa as a framework with which to address these issues. While some complementarity has been established in terms of division of work, there has also been overlap of responsibilities resulting in chaos or downright bitterness. Yet, despite the slow progress, international institutions and peacekeeping partnerships seem to be the roadmap for the foreseeable future.