Pulling together the most salient, current issues in the field today, this work provides a significant assessment by leading scholars of key topics related to gangs, gang members, and responses to gangs. This includes extensive coverage of the individual theories of delinquency and provides special emphasis on policy and prevention program implications in the study of gangs, as well as a a broad understanding of how other countries deal with gangs and their response to gangs, including Great Britain, Latin America, Australia and Europe.