Gas prices at a Chevron station in Pasadena, CA.
As the price of oil pushes higher and gas prices ascend nationwide to levels we're already seeing in California, there's been unleashed a fury of discussion about "Why, oh why?" this is happening. Speculation on oil futures has been blamed (Hedge funds!), as has the threat of an Israeli strike on Iran's nuclear sites or a temporary shutdown of the Strait of Hormuz by Iran itself.
Neither makes much sense to me, although there may be elements of the true story in each. Speculators can drive prices up just to bet on them falling, so you have to factor in a certain amount of volatility there. As for Iran's naval capabilities...well, the Strait could be closed for maybe a few days, possibly even a week. But it wouldn't take long for the U.S. Navy to sink pretty much everything Iran has that floats.