 The committee argued that Israel's security relies not on the attainment of a nuclear bomb but rather on the nuclear proliferation of the entire region.It was also argued that attaining a nuclear bomb would cause an intensified Arab effort to attain one as well, thus resulting in a balance of terror that might jeopardize the Zionist enterprise.The committee acted behind the scenes and led to a quiet discussion on the issue among several of the members of the big parties, including Levi Eshkol, who replaced Ben-Gurion in 1963, and other party leaders such as Haim-Moshe Shapira of the National Religious Party, Pinchas Rosen of the Liberal party, Yaakov Hazan and Mordechai Bentov of Mapam and Ahdut HaAvoda men Yisrael Galili and Yigal Allon.