Aligholi Ardalan ( Persian : علیقلی اردلان ; also Romanized as Aliqoli Ardalan ; 25 January 1900 – 2 August 1986) was one of the leading Iranian diplomats of his generation. He served as the minister of industry, the cabinet minister for foreign affairs and as ambassador to the United States , the Soviet Union , and West Germany . He was also managing director of the National Iranian Oil Company for Southern Iran.