The UPA Special Studies series offers federally commissioned, in-depth research on topics of the highest priority from leading public and private policy research facilities. The authors of these studies are associated with such institutions as the RAND Corporation, the Army War College's Strategic Studies Institute, the Naval War College's Center for Advanced Research, the National Defense University, the Institute for Defense Analysis, the American Institutes for Research, and major international institutes at prominent universities. Since the 1970s, the phenomenon of international terrorism has repeatedly forced itself upon the American consciousness. At the same time, policy makers have struggled to formulate an effective and coherent strategy to combat terrorist acts, both domestically and abroad. This UPA microfilm series focuses on attempts by the United States and other nations to deal with the continuing threat posed by terrorism. The series provides a multifaceted examination of the facts, causes, and political implications of a phenomenon that confronts every region of the world. These new supplements to UPA_s Special Studies: Terrorism, chronicle America_s views on terrorism, development of a national policy and countermeasures, definitions of terror-types, analysis of events, and includes a broad range of ancillary issues to the terrorist threat. There is no single definition of terrorism. The federal government defines terrorism as __the unlawful use of force or violence against persons or property to intimidate or coerce government, the civilian population, or any segment thereof, in furtherance of political or social objectives._ The materials in these new supplements will provide the documentation necessary for understanding and defining terrorism.