Chapter 72 of the McGraw-Hill Homeland Security Handbook addresses the important issue of the ideological differences between the United States and al-Qaida and the necessity to win the war of ideas. This chapter outlines the ideology promulgated by al-Qaida and associated terrorist groups. It examines recent attempts by the United States to combat al-Qaida’s worldview and compares this effort with America’s global propaganda campaign against the Soviet Union. The chapter concludes with some preliminary ideas about waging an effective counterpropaganda campaign against al-Qaida, including potential themes and approaches.