摘要:The fight against street‐level drug crime cannot be won by spending more resources on traditional, reactive style police work. Rather, partnerships between the police and other “third parties” should be applied, such that police work cooperatively with third parties to analyse underlying problems, target hotspots and establish cooperative partnerships with e.g. housing associations, local businesses, and government regulators. The conclusion of this Campbell Systematic Review is based on a comprehensive search of the evaluation literature in the field. The review compares the results of 14 studies of police intervention aimed at drug‐related crime. All of the studies were carried out in the USA, the majority in the early or mid‐1990s. All the studies measure the effect by comparing an intervention group with a control group.