Iran is an importer of fuel as they have no refineries. Iran needs to export crude in order to fund itself. There's a 10 day supply of oil, and without exports, Iran shuts down in 21 days. The US does not depend on Iranian oil, or on Saudi Arabian oil for that matter. food for thought.
EU's Mogherini in Tehran to talk nuclear deal, regional issues (Reuters)
from the article: Ahmadinejad: Israel is 'flag of Satan,' may face disintegration