War on Iran's oil-exporting

The wrecker threatened to attack Kharg Island, Iran's main oil export terminal. Iran has already threatened to respond by attacking Persian Gulf countries' oil export terminals. This could lead to an oil crisis that would last for years. I wonder whether the wrecker aims to bully them with the threat of such a crisis. That is a typical pattern of his. However, I can't envision what concession he might hope to get from them in this instance. I wonder whether anyone else has an idea. If the goal is to reduce Iran's oil exports, the rational way to do that is by seizing tankers once they exit the Persian Gulf (or stopping empty tankers from entering it and heading for Kharg Island). They would have no way to resist, so it could be done without actual violence. The US could seize and sell the oil, too. With a wiser leader than the wrecker, it could offer to return the ships, and pay Iran for the oil, when peace is agreed. But I don't think the wrecker would see such an outcome as a sufficient triumph.