For relevant explanation, company revenue & benefits from U.S. Government, and current status in Iran, see this link (published on March 6, 2010):
http://www.nytimes.com/interactive/2010/03/06/world/iran-sanctions.html
5.56mm
Between this article and a few others it seems Iran, one of the biggest oil producers in the world might just be having a bit of a fuel shortage soon....