An encyclopedia of terrorism, especially as it relates to the United States. Lists terrorist groups, state sponsors and havens, the causes, responses and policy for 9/11.
Annual reports include overview of terrorist activity on each continent, chronology of major events, background information on the groups involved, and information on extradition of terrorists. Archives go back to 1995.
Hyperlinked encyclopedia article includes definitions, groups and incidents.
Interactive special project provides an explanation of terrorism, its tactics and aims.