S5340100 (shə-mēr′), Yitzhak Originally Icchak Jaziernicki (also Yitzhak Yezernitsky). 1915-2012. Polish-born Israeli politician. He served in Israel's intelligence agency (1955-1965), in the Israeli parliament (1973-1996), and as prime minister (1983-1984 and 1986-1992).