One thing I can guarantee you: When Iran has both the CAPABILITY AND INTENT TO NUKE ISRAEL, ISRAEL WILL LAUNCH A PREEMPTIVE STRIKE. It will not matter what Bush or anyone else says, we learned our lesson at Dauchau, NEVER AGAIN! The mad mullahs are probably hoping that such a strike by Israel will turn the Islamic world against the U.S., and that may happen. However, if the Iranian people let their leaders threaten Israel, they will suffer right along with the leaders.
All else is speculation. But the above is a stone cold fact.
Israel can't "take a hit". Thus, if they have reason to believe the country is in danger, their leadership will strike first.
Everybody in the world knows this. Except, possibly, Iran.
And therein lies The Problem...