In other words, is the US using Iran's nuclear program as an excuse to pressure them out of opening their oil market?
From a nationalistic perspective, having oil trade 'in country' of production sounds ideal. Countries like Iran, Venezuela, are likely to be more protectionist and want to extract more value out of a declining resource as time goes on.

I'm sure one day much of the refined gasoline in the world will come from producer nations, not from domestic consumer/importer nations.

Gonna happen in the Phillipines soon...

"I'm sure one day much of the refined gasoline in the world will come from producer nations"
I'm going to have to differ on that. Refining the gasoline is a matter of capital and efficiency, and that is one thing our market system has an ample supply of. Most resource economies tend to remain resource economies until the supplies run tight, whereas resource-poor nations (ie Japan), tend to dominate the manufacturing of secondary products.
Sounds like you need to read this article that was quoted on EnergyBulletin at the beginning of last month.

I can't remember if it talked about what came first; the Chicken (US aggression) or the Egg (Iranian Oil Bourse plans).

According to this article, though, there is a lot more here than meets the eye.

Thanks for the link to the great article.  Unfortunately it didn't answer my first question and it didnt really show how much of an effect on the USD an Iranian oil bourse would have.  I guess i'll have to read the author's book to go more in depth(and maybe take some econ. classes). I highly doubt that the US would overtly intervene in Iran.  It would be suicide.