It's hard to think of another case where sanctions have had such drastic effects on a country's economy so quickly. Iran used to export 2.14 million barrels of oil every day; that was two years ago. Now that number stands at some 890,000. The value of the rial has crashed, and the IMF reports that Iran's economy has shrunk for the first time in more than two decades. Even Mahmoud Ahmadinejad admits the country is feeling the pressure.