The US is oil independent. And they are willing to take a lot of pain to stay on top, even if it means the whole world takes a lot of pain. Military primacy supercedes other concerns. I think taking the THAAD from S. Korea was because they have to make hard choices, and the active war is currently in Iran. Nonetheless, since I wrote this, nobody has mined the strait. So my comment is, for the moment, moot. Iran controlling who can pass by other means is the best option for Iran.