I expect there will be a war between the US and Iran. Iran is doing all it can to provoke one short of directly attacking our Navy.
Iran's regime is apocalyptic. They believe that the return of their mahdi is imminent but he will only come back in the midst of an apocalyptic struggle between islam and 'Rome'. If Khameini really is as sick as Pat says this could come sooner rather than later. The evil bastard would probably relish going out in a blaze of glory.
Oh a mahdi is coming back some day in the form of a God named Jesus Christ. Nothing Iran or the US or ISIS does will hasten or slow that day that will come. It is all God's time, His time is a day as a thousand years and a thousand years as a day.
Biblical prophecy has Damascus destroyed in a night and Egypt uninhabitable for 40 years. Those two events will happen before the Messiah returns, it may be decades away still.