Iran has refineries, just not many. Preventing refined gasoline from coming into Iran should not pose a major problem.
"Iran has refineries, just not many. Preventing refined gasoline from coming into Iran should not pose a major problem."
You might find this of interest:
Iran to Use Reserve Dollars to Skirt Gas Crisis
http://www.freerepublic.com/focus/f-news/1671692/posts?page=160#160
Cheers - Dinah