"Asked whether Iran would use an "oil weapon," Javad Vaeedi, deputy secretary of Iran's Supreme National Security Council, told Reuters in Vienna: "We will not (do so now), but if the situation changes, we will have to review our oil policies."
OIL IS THEIR LIFEBLOOD. IF THE MULLAHS IN TEHRAN STOP PUMPING THEY WILL BE BANKRUPT IN A VERY SHORT PERIOD OF TIME.
Their economy is almost bankrupt anyway. Besides, they just signed a massive deal with China to develop natural gas fields in Iran. My biggest concern would be that Iran has already purchased the components necessary on the black market to build a warhead which can effectively hedge their expectancy that the world would try to shut down their program once it became public knowledge. They had to realize this long ago - that their program for self sufficient nuclear armament would be doomed unless they could acquire a stopgap weapon to keep the world at bay.
That's what should concern us.