At this point Iran is going to talk a good game, but in the end they will do little to nothing.
They have to be asking themselves if they are feeling lucky. Based on recent results, they are not holding a good hand. They have three options: fold, call or raise.
The fold shows weakness... exploitable by others in the area.
The call has inherent risks to their country
Raise means that they are putting THEIR OWN LIVES on the line.
I suspect that quietly folding will be their choice, lest the be obliterated in options 2 or 3.
One US B2 bombing run over their oil fields, and their economy is toast.