The German Congress on Crime Prevention (GCOCP) is an annual event that takes place since 1995 in different German cities and targets all areas of crime prevention. Since its foundation the GCOCP has been open to an international audience with a growing number of non-German speaking participants joining. To give the international guests their own discussion forum, the Annual International Forum (AIF) within the GCOCP was established in 2007. For international guests this event offers lectures in English language as well as other activities within the GCOCP that are translated simultaneously. This book reflects the outcomes of the 12th AIF (11 and 12 June 2018 in Dresden) and of the International Conference on Prevention of Violence and Extremism - PV&E (8 and 9 November 2018 in Eschborn). The articles show worldwide views on crime prevention and criminal policy with a focus on the topic of violence and radicalism as well as the current status, discussion, research and projects in crime prevention from different countries.