I don't see any meaningful dialog, Kukri. Iran has no incentive to do so, currents events are going their way in the region. Keeping the "external dangers" in the forefront helps blunt the internal dissent. I'm sure they'll flirt, for appearances sake and to buy development time, but that's all it will be.

Look at a map and count the number of Iran's neighbours that HAVE been invaded by the US, add in all the testosterone-fuelled rhetoric from Washington and it's easy to form that perception, very easy. If your neighbours have been burgled, the guy across the road has been burgled, and the bully at the end of the street says "Oi! You're next!",
Actually, the knowledge that:

1) The US home political dissent about the war, and

2) The fact that the US would recieve no help from any other nation or ally,

3) Coupled with the fact that the US military is already stretched to the breaking point...

Is pretty obvious to even a global political layman that invading Iran,as the situation currently stands, ain't happening. Do you suggest that the powers that be in Iran are "ignorant" of this?