Covert Shores – The threat of Iran’s naval mines, together with ASBMs (anti-ship ballistic missiles) and USVs (surface drones), is closing the Straits of Hormuz. The narrows waterway at the mouth of the Persian Gulf is critical to global economy with approximately 20% of the world’s oil transiting it. Below are the main/relevant types of mines. It cannot be ruled out that Iran may have other types in addition to these.