If Israel can threaten to attack Iran, without drawing the unanimous rebuke of the international community, then it follows Iran cannot be criticized for warning of its imperative to make a preemptive strike. Except that both would be illegal, the United States being the reigning serial aggressor at large. Or maybe you’re of the opinion that Israel can have 200 nuclear weapons and Iran can’t have one, or that if US and Israeli agents detonate bombs in Iran it’s not terrorism.