The amended law requires the Department of State to report on the extent to which other countries cooperate with the United States in apprehending, convicting, and punishing terrorists responsible for attacking US citizens or interests. The law also requires that this report describe the extent to which foreign governments are cooperating, or have cooperated during the previous five years, in preventing future acts of terrorism. As permitted in the amended legislation, the Department is submitting such information to Congress in a classified annex to this unclassified report. No one definition of terrorism has gained universal acceptance. The US Government has employed this definition of terrorism for statistical and analytical purposes since 1983.
Domestic terrorism is probably a more widespread phenomenon than international terrorism.
Because international terrorism has a direct impact on US interests, it is the primary focus of this report. However, the report also describes, but does not provide statistics on, significant developments in domestic terrorism.