Former PM says the center-left has to unite in one bloc to defeat Netanyahu, declines to confirm who would join new slate

Former prime minister once again said to be looking at prospect of reentering politics with new slate, would seek to form bloc with Labor

Former PM hoping to team up with Labor and other prominent politicians on center-left in effort to oust Netanyahu

Former prime minister and defense minister, 77, will reportedly decide whether to run in September, after conducting his own public opinion polls