RealClearWorld links to an article in The Guardian which does a good job of laying out the options and dilemmas posed by an Irani attack on a Saudi refinery. It argues that they’ve put Trump in a bind.
If Trump attacks he violates a campaign promise and gets the US into another unpopular-at-home war in the region. If Trump does nothing he looks weak, all locked-and-loaded bark and no bite. I wonder if an old-fashioned blockade is an option?
Sadly, this article sounds about right to me. See what you think.