“The field of international relations has various interesting theories that define the interaction of countries in the world arena. Among other theories realism and liberalism are the two major theories. According to these theories, there are different actors in the international system. States, international organizations, non-governmental organizations and multi- national corporations are some of the actors in global politics. Both theories are agreed that there is an anarchical nature in the international system. But they have theoretical differences in their approach for making this world peaceful to human beings. The aim of this article is not to discuss the overall theoretical framework of both theories. Rather it is aimed at relating some concepts of the international relation’s theories with the present political conditions in East Africa. The focus of this article is on the peace and security of the region. As it is well-known, the East Africa region is one of the most volatile regions in the world.”