My theory is that Iran is simply sabre rattling to drive the price of oil up. Iran is suffering under a tremendous deficit right now. If oil goes up $10 a barrel they will be able to pay off their deficit by next year. I've known quite a few Iranian's. They've always been smart people. My guess is they are: 1. trying look tough which is good for their image politically. 2. Driving up the price of oil to be richer. 3. Getting their country out of a bad debt situation.