Doctor of Philosophy, Goethe University, 1971. Doctor Habilitation, University Hamburg, 1981.
Assistant professor Goethe University, Frankfurt, Germany, 1971—1972, associate professor, 1972—1973. Professor international relations George August University, Gottingen, Germany, since 1973. Visiting professor University Heidelberg, Germany, 1972, visiting scholar, 1982.
Visiting professor Institute des Relations Internationales du Cameroun, 1986. Visiting fellow Princeton University, 1986—1987.
Member of Arbeitsgemeinschaft Vorderer Orient (member executive council since 1982), Middle East Studies Association North America, Deutsche Gesellschaft fur Soziologie, Deutsche Gesellschaft fur Politikwissenschaft.
Married Renate Bruckner, February 22, 1969 (divorced 1976). 1 child Fabian; Married Ursula Helwig, November 19, 1976.