It is not just Iranian oil that passes through the Strait or Hormuz. Many gulf states send their oil out via the strait too. It is your precious Iran that is threatening to not allow other states to sell their own commodities to who they want, when they want. Iran can do as it likes with it's own oil, America does not buy oil from Iran anyways. You have it backwards. Your hate has twisted your facts.
North Korea insists it 'regrets,' not apologizes, over mine blast that killed 2 South soldiers (AP)
from the article: Iran official: U.S. cannot stop us from cutting off world oil supply