This annually published yearbook provides a variety of informative articles on global armaments and disarmament. Topics include major armed conflicts, security issues, military expenditures, armaments developments, and non-proliferation and arms control issues. The yearbooks contain comprehensive information, complete with tables, graphs, and maps, concerning major international political events and developments current at the time of each volume’s publication. Conventional, biological, and chemical weapons are dealt with in addition to nuclear weapons. Numerous appendices are provided in each volume, many of which include the text of agreements, policy statements, or other important primary documents. A final appendix includes a detailed chronology of the pertinent events for the year in question. The Stockholm International Peace Research Institute (SIPRI) website contains abstracts of the articles contained in the most recent edition of the SIPRI yearbook.