Iran fought Iraq for 8 years and didn’t defeat them despite having twice the population.
Give the devil his due: Saddam fought the Iranian mullahs to a standstill during 1980-1988.
But Ronald Reagan was Commander in Chief. The mullahs weren’t going to carry the war to us or to Israel. Not that stupid.
Now, the Israelis are on their own. They’ll use nukes if it’s a matter of survival.