The Sword and the Shield

^{APPENDIX D} THE ORGANIZATION OF THE KGB FIRST CHIEF DIRECTORATE (FOREIGN INTELLIGENCE)

Source: Desmond Ball and Robert Windren, ‘Soviet Signals Intelligence (Sigint): Organisation and Management,’ Intelligence and National Security, vol. 4 (1989), no. 4; Christopher Andrew and Oleg Gordievsky, KGB: The Inside Story of Its Foreign Operations from Lenin to Gorbachev, paperback edition (London: Sceptre, 1991); and Mitrokhin.