<Li> Hồ Chí Minh was prime minister from 1946 to 1955 and president from 1945 until his death in 1969 of the Democratic Republic of Vietnam (North Vietnam). </Li> <Li> Lê Duẩn was the General Secretary of the Communist Party of Vietnam and leader of North Vietnam and later the unified Vietnam from 1969 until his death in 1986 . </Li> <Li> Tôn Đức Thắng was the second and final President of North Vietnam and the first President of the Socialist Republic of Vietnam . </Li> <Li> Phạm Văn Đồng was the Prime Minister of North Vietnam from 1955 to 1976 . </Li>

Who was the leader of south vietnam during the war