During the so-called Cold War.The fact that both sides had these terrible weapons restricted each side from exploring political ends through war. It's what stopped the US from invading North Vietnam in the war there. It probably stopped the USSR from invading western Europe. Iran's possession of a nuclear arsenal,(no matter what its size) would stop Israel from perusing certain military objectives it may want to do in the future.That's Israel's dilemma.
Shaffir to Herzog: Opposition failed to show leadership in political battles against PM (Haaretz)