Um, Iran doesn't have any refineries. They import all the gasoline they use.
Iran has refineries, just not many. Preventing refined gasoline from coming into Iran should not pose a major problem.
"Um, Iran doesn't have any refineries. They import all the gasoline they use."
Au Contraire.
http://www.freerepublic.com/focus/f-news/1671692/posts?page=234#234
Cheers - Dinah