I'll be the contrarian on this one. I think we have a good 6-9 months of the UN mambo. Then with mid-term elections in full swing, we won't start anything. I say 2007 before anything happens. I don't think Iran has the capability to do anything before then.
Its there to see... Israel will not tolerate a fanatic with a nuke within striking distance.
They have tolerated other governments with leaders that weren't willing to launch nuclear missiles.
But this one starts off his presidency announcing his desire to annihilate Jews.
Then starts telling the world about his desire for the Muslim Messiah to come.
Sorry..we canot expect Israel to take him as a joke. We wouldn't.