A study of the powerful and much-feared East German Ministry of State Security from its establishment in 1950 to its fall in 1990. The Stasi was a central institution of the GDR, and this book illuminates the nature and operation of the entire East German regime, addressing one of the most important topics in modern German history. Its emphasis is primarily on the key years under Erich Honecker, who was Head of State from 1976 and ousted in 1989. The book looks at all aspects of the control, operation and impact of the security police - their methods, targets, structure, accountability, and in particular the crucial question of how far they were an arm of the ruling communist party or were themselves a virtually autonomous political actor.