Not only can they do something like this--they have. Back in 1981, they flattened Iraq's nuclear reactor.
If the Iranian get too far, they can expect a visit from Israeli aircraft. I'm all for it.
The Israeli strike in Iraq back then was a completely different situation than in Iran today.
Iran has the Shihab-3, Silkworms, and other response capabilities. Iraq did not.,
Iraq had one site. Iran has a few and they and some are hidden deep under mountainous terrain.