Friedensbewegung
During the 1980s the main focus of his work laid on security policy, his dissertation “"Die Krise der Sicherheitspolitik"” (The Crisis of Security Policy) dealt with foreign and security policy decision making processes in West-Germany. In his thesis he observes the development of a Peace movement (opposed to the installation of medium-range rocket on German soil) and theorised their influence on West-German foreign policy. The contribution of his work is crucial to IR theory because it opposes the logic of equality between force and deterrence.