 After the establishment of the State of Israel, he was elected for Mapai to the first and second Knessets, and was a member of the Foreign Affairs and Defense Committee.He supported the dispersion of the population, giving preference to the periphery rather than the center area.He was among the activist members of the party, taking an ardent pro-American stand in the struggle against Mapam, regarding Israel's relation with the United States and the Soviet Union.