What if Iran Tries to Close the Strait of Hormuz?

The straight of Hormuz is a narrow stretch of water that links the Persian Gulf to the rest of the world. About a fifth of the world's oil flows through it. That's the world's produced oil, the world's consumed oil.It has to go through that waterway. It's largely unavoidable. And so any kind of material disruption would be a big issue.Iran has always said that it could close the straits if threatened, if the situation demanded it. It would be very difficult for Iran to do that and certainly very difficult f ...