The Small Arms Survey 2010 focuses on gangs and non-state armed groups. Gang violence, while typically directed at other gang members, can account for a major portion of social violence. Armed groups - whatever their orientation to the state - are of growing concern in conflict and post-conflict settings, where their activities can have serious repercussions for human security. This volume reviews a range of issues related to gangs and armed groups, exploring their functions, roles, and use of violence, as well as emerging efforts to address the damage they inflict on society. The volume explores prison gangs, gender aspects of gangs, and pro-government groups; it also features case studies from Ecuador and southern Sudan. Original research on the global ammunition trade and on options for controlling illicit firearm transfers by air rounds out the book.