I don't believe that the U.S. is going to open a third front to aid the Israelis. Especially since they're planning a Nuke assault against Iran. The
U.S. will be not the ally of the Israelis this time, that's for sure. And Iraq also is not going to support any alliance, where Israel is appearing.
So, if I must guess; when Israel starts it's own war, they will be alone.

