Pakistan and India have nukes and they despise each other,but it doesnt mean either country is going to use them.Ever hear of mutual destuction?During the cold war Russia and America hated each other did they use nukes?Let Iran have their nuke it doesnt mean they will use it,because if they do well they can say goodbye too.Them trying to get a nuke is just an excuse to attack Iran.Iran will never use a nuke against Isreal for the same reason Pakistan wont use a nuke against India and for the same reason Russia never used them against America.