NIDA International Program Director Steven W. Gust, Ph.D., organized and co-chaired a symposium titled “Marijuana, Addiction Physicians, and Public Policy” at the International Society of Addiction Medicine (ISAM) meeting. Speakers included Jag H. Khalsa, Ph.D., NIDA Division of Pharmacotherapies and Medical Consequences of Drug Abuse, who reported on NIDA research into treatment medications, and Vladimir Poznyak, M.D., Ph.D., World Health Organization, who reported on global epidemiology of cannabis use and implications for public health.