First of all Iran is a Islamic Theocracy and Pakistan is not. Second of all Pakistan is the USA’s ally and Iran is our enemy. Finally, Iran’s nukes are not to be aimed at Pakistan, they are for wiping Israel off the map.
I shouldn’t have to tell you any of this.
Secondly, Pakistan is not an ally -- it's an ally in name but an enemy in reality.
Finally, Iran's nukes will be aimed at it's Sunni enemies