States of the Great Lakes Region (GLR) of Africa have had terrible histories of conflicts either internally or externally caused. These have left millions of citizens dead, and similarly impairing economic activities, and in several ways destabilizing human habitation. At the heart of these conflicts, different countries have tried to handle peace and security issues in the GLR either by use of Statism or Regionalism. The interplay of the two approaches is an interesting phenomenon. Kenya, then a country surrounded by many others in conflict was peaceful. It made several attempts to mediate her neighbours’ conflicts between 1985 and 2005. It is not easy and conclusive to suggest whether Kenya’s participation was entirely a regionally backed effort or entirely a state approach. From the book, modern Realists back Statism whereas Neo-liberalists support Regionalism. The question whether identities of states change due to cooperations is an issue. Objectives of states notwithstanding, their association with other states remain an important element of their behaviour. The book targets Scholars, Students, Practitioners, Actors, and those who love world peace.