United Islamic Republic

Tom Clancy had a book (sorry, I forgot which one... they all run together) in which Saddam gets popped and the power vacuum leads to the Iraqis and Iranians melding into one single country called the United Islamic Republic.

Of course, the timeline and subsequent actions involved forced you to suspend disbelief, but does that necessarily mean it couldn't happen in some form?

The best part is this line:

Most of the neoconservative assumptions about what would happen have proven false.

No shit?!? My high opinion of them has been shattered! They were on such a roll...