ABSTRACT
SUMMARY. Terrorism has been present for centuries in a myriad of forms and locations. However, the events of September 11, 2001 gave terrorism a new meaning in the United States and many other nations. Following a brief historical review of terrorism, we examine the background of Al Qaeda. We then look at definitions of terrorism and review factors that contribute to its development. In the conclusion, we note the challenge that faces the world in combating terrorism, not only with mil-
itary means, but also by acknowledging and treating its diverse origins, expressions, and consequences.
