The Congressional Research Service (CRS), a component of the Library of Congress, conducts research and analysis for Congress on a broad range of national policy issues. The Federation of American Scientists (FAS) has curated and made available a selection of CRS Reports related to Terrorism.
U.S. law requires the Secretary of State to provide Congress, by April 30 of each year, a full and complete report on terrorism with regard to those countries and groups meeting criteria set forth in the legislation. This annual report is entitled Country Reports on Terrorism. Beginning with the report for 2004, it replaced the previously published Patterns of Global Terrorism.