The PLO. The IRA. Hezbollah. The Munich Olympics hostage takers. Osama bin Laden's Al Queda group is far from the first organization to use terrorism against civilians to achieve their aims.
President Bush has vowed to bring down all terrorist groups. But what defines a terrorist versus a freedom-fighter? How do these groups function? And what lessons have we learned from past terrorist groups that can help us in today's battle?
David Rapoport, founding editor of the academic journal "Terrorism and Political Violence" ;
Kevin Cullen, reporter for the Boston Globe
covered Northern Ireland for 15 yearsLeonard Weinberg, political science professor at the University of Nevada;
John Moore, former terrorism analyst for the U.S. government.
This program aired on October 4, 2001.