Nasrollah Entezam ( Persian : نصرالله انتظام ; also spelled Naṣr-Allāh Enteẓām ; 16 February 1900 – 19 December 1980) was a diplomat, politician, and minister, as well as Iranian Ambassador to the United States and France . He was the first Iranian Ambassador to the United Nations from 1947 to 1950 and President of the UN General Assembly during its fifth session in 1950.