You can believe ANYTHING you want. I quit believing in Santa Clause as very LONG time ago.
Layout what treaty? If you want to believe that they abide by treaties while we pose a threat to them, you know well enough that our ability to stop them is almost nil.
As to the question about oil prices going up, that is where the rest of the middle east needs to step up and flood the market to stop increase in prices. In addition to this if we are actually concern about the price of oil, we would do everything that we can do to make the dollar stronger - like cutting our spending and lower our debt.
By the by the Chinese have said the straights need to stay open.
Pre-World War II or post WW II?When was the last time the US used a naval blockade? For what reason?