Lion of the Desert 1981
Writer
Airport '77 1977
Story
The Message 1976
Writer
Foxtrot 1976
Screenplay
Waterloo 1970
Scenario Writer, Screenplay
The Adventures of Gerard 1970
Writer, Scenario Writer
Fraulein Doktor 1969
Screenplay
Anzio 1968
Screenplay
The Making of an Epic: Mohammad, Messenger of God 1976
as Himself
Credits from TMDB.