Violent conflict is the multifaceted and cyclical problem that the international community is trying to grapple with. To date, there has been a clear hierarchy concerning what forms of violence are seen to matter most, with political violence that threatens the state taking pole position. In examining this argument, this paper sets out a number of issues relating to security and justice definitions. It will then examine some of the problems associated with placing conflict into a box-set typology: mass violence associated with war and genocide carries unique features but also spawns new challenges which are often being ignored. The paper will then examine in brief some of the measures used by communities, governmental actors and international partners in contending with violence before outlining some key conclusions and recommendations. In reading this paper two further points need be borne in mind: 1) this does not provide a comprehensive overview of violence and security - that is the role of the World Development Report (WDR) itself, and 2) this paper does not present fresh research, but more an overview, along with the other papers in the security-justice series, of some of the key issues confronting policy makers in the domain of security and development.