 In 1950, 1952 and 1963 he travelled to the United States as an emissary for Hashomer Hatzair, and between 1959 and 1961 served as secretary of the Peace Movement.A member of the Mapam secretariat, he was elected to the Knesset on the Alignment list (an alliance of Mapam and the Labor Party) in 1969.He was re-elected in 1973, and in 1977 was part of the Mapam faction that briefly broke away from the Alignment.