influential Israeli politician who was noted for securing funds and military aid for Israel.

At age 20 Sapir moved to Palestine, where he joined the Israel Labour Party, organized demonstrations and strikes during the period of British rule, and was imprisoned for four months (1933). A member of Haganah, the Jewish underground military organization, he became its quartermaster in 1948 with the rank of lieutenant colonel. After Israel gained independence he was appointed director general of the Ministry of Defense and then of the Ministry of Finance. In 1955 he was named minister of trade and industry, and in 1963 he was made minister of finance. In 1974 he was elected chairman of the executive of the Jewish Agency for Israel and of the World Zionist Organization. Sapir became one of the most powerful men in Israeli politics through his ability to raise money from overseas Jewish communities and through his success in obtaining military aid from the United States. He was also influential in securing Golda Meir (Meir, Golda)'s succession to Levi Eshkol (Eshkol, Levi) as prime minister in 1969 and the subsequent choice of Yitzhak Rabin (Rabin, Yitzhak) as her successor.