1905-1975. King of Saudi Arabia from 1964. The younger brother of King Saud, on whose accession 1953 he was declared crown prince. He was prime minister from 1953 to 1960 and from 1962 until his assassination by a nephew. In 1964 he emerged victorious from a lengthy conflict with his brother and adopted a policy of steady modernization of his country. He was assassinated by a nephew.