Drug prevention programs seeks to influence knowledge, attitudes, and behaviors by focusing on specific target groups, the style and content of the message, and the medium for communicating the message. Programs include media campaigns, school-based efforts, alternative activities, workplace programs, drug testing before and during employment, and AIDS prevention. Treatment programs vary in goals, settings, referral sources, and modalities. The prevention and treatment of drug abuse in correctional facilities and the use of noncustodial alternatives for drug-dependent offenders are receiving increasing attention around the world. Supply reduction strategies focus on eradication, crop substitution, the development of alternatives, and the prevention of drug manufacture and the diversion of chemicals. Strategies against drug trafficking focus on disrupting organizational structures and operations. Financial strategies include anticorruption measures and the prevention of money laundering. Photographs, figure, and reference notes