Sallam, I wish to point out I am neutral but I have some questions for you on these regards:

Do you doubt/assume the USA will intervene on Israel's behalf? How will Iran commit troops as well? I mean if Iran goes through Iraq it's game over Iran but now that Turkey is cooperating along with Syria it compounds things.

Also off topic but on topic, if Iran and it's Middle-Eastern Coalition as we'll dub it topple the Israel government what do you believe should be done? Then lets also assume the major player involved will be Iran which is headed by religious extremists.