This is an act of desperation by the nut jobs running Iran.
The Doomsday ImMadInTheHead cannot deal with the thought that him getting the A-bomb to drop on Israel has the dude has 'snapped another strap'.
IMHO, I think Iran has already acquired a nuke from N. Korea and is now provoking the West and its allies to have an 'excuse' to pop the device west SW of Iraq.
Also, the Iraq oil industry is being ripped off daily by militias and corrupt government officials. This money has been being skimmed for a while now and it wouldn't surprise me one bit if some of the black market oil profits haven't found their way back to Iran.
Iran's economy is on the brink of collapse from what I've been told by a coworker who has family in Tehran.
I just filled the tank this morning. If this begins to escalate, gas will hit $6 ' gal by end of next week.
I think you're probably right that the Iranians have a nuke - whether it's NK or former Soviet I'm agnostic - and are confident that it will work. They're itching for an excuse to pop it on the Jews.