Preface: In response to legislation passed in 1985, the Department of State on July 30, 1986, submitted to Congress a document titled Active Measures: A Report on the Substance and Process of Anti-U.S. Disinformation and Propaganda Campaigns. This report updates that document, focusing on events and changes which occurred between June 1986 and June 1987. Both reports were prepared by the Active Measures Working Group.