This chapter sets the stage for our theory by condensing research on war proneness and aggression. Lorenz's findings threw the study of human aggression into a quandary because humans clearly do participate in the murder, cannibalization, and organized killing of their own species. As such, this book aims to develop a reasonably comprehensive theory which takes into account humanity's evolutionary past in order to help explain the present. To understand how people are mobilized for war, it is important to examine how leaders appeal to nucleus ethnicity. First, the four core elements of the people theory are presented in building-block fashion. A major organizational strategy implicit in our theory itself is that it provides a framework or crude blueprint for reorganizing a vast amount of material on warfare much of which is contradictory. In addition, it places existing policy on trial for its neglect of key variables in humanity’s propensity for warfare.