Since the terrible events of 9/11, more attention than ever has been paid to the threats and challenges posed by terrorists. Weinberg explains who the terrorists are, where they came from, what motivates them, and what, if anything, can be done to stop them. It provides a fascinating insight into how terrorist 'cells' operate and what they might do in the future. Leonard Weinberg is Foundation Professor of Political Science at the University of Nevada. He has also served as a consultant to the United Nations Office for the Prevention of Terrorism and was a recipient of the 1999 Thornton Peace Prize.