The Strait of Hormuz might look like just a narrow stretch of water, but it’s one of the most important routes for the world’s oil and gas.

Tehran said it will reserve all options to defend itself.This US move has stoked speculation that Iran’s leadership may reach for another way to pressure its enemies to relent — blocking or effectively closing the Strait of Hormuz to shipping.

Pentagon officials are trying to prepare for all of the ways Iran could retaliate, as President Trump hints at what he might do.