The most violent places in the world today are not at war. They are instead buckling under a maelstrom of gangs, organized crime, political conflict, corruption, and state brutality. Such devastating violence can feel hopeless, yet some places—from Colombia to the Republic of Georgia—have been able to recover. Drawing on fifteen years of study and firsthand field research—interviewing generals, former guerrillas, activists, politicians, and law enforcement in countries around the world—Rachel Kleinfeld tells the stories of societies, including our own, that successfully fought seemingly ingrained violence and offers penetrating conclusions about what must be done to build governments that are able to protect the lives of their citizens.