Guidelines for developing evidence-based substance abuse prevention and treatment programs are available online through the International Society of Substance Use Professionals (ISSUP) website. The U.S. Department of State Bureau of International Narcotics and Law Enforcement Affairs (INL) publishes the Field Guide to Drug Demand Reduction Program Development annually as a resource for U.S. Embassy personnel. INL shares the publication with the drug demand reduction community to promote coordinated efforts on comprehensive, public health approaches and help expand the global community of knowledgeable drug demand reduction professionals. The guide includes suggestions for assessing local substance use issues and resources and describes efforts by INL and its partners to develop the drug demand reduction workforce, professionalize drug treatment and prevention services, build global networks and community coalitions, and address the needs of vulnerable populations. More information about the guide can be found on the ISSUP website.