Iran is a long way away from a nuclear bomb. Israel has one. The question I have is would Israel use it? At this point, Iran is in chaos. They are not about to declare war on anyone.

Stats on how many are killed during different periods of history are unverifiable.
There are for example no reliable stats on how many Iraqis have been killed since the Occupation.

The clerics and the Shah both offered brutal dictatorships. One was an American puppet,
the other a religious fanatic.