This chronology lists and briefly describes international terrorist incidents beginning with the first U.S. aircraft hijacked on May 1, 1961, and ending with a restaurant bombing in Baghdad on December 31, 2003. "This document, based entirely on public sources, was prepared for background information and reference purposes. It is not intended to be a complete or comprehensive account of all terrorist incidents during these years, and it is not an official expression of U.S. policy."
U.S. Department of State: http://www.state.gov