Newsweek said that at least three cargo ships were attacked in the Strait of Hormuz on Wednesday. One of them was a Thai vessel that was struck of the Emirati coast. Photos from the attack showed the ship ablaze and giving off huge plumes of smoke. Most of the 23 crew members aboard the vessel were rescued by Oman authorities.

"Iran has extensive tunnel networks to protect and launch such vessels surreptitiously, including midget submarines and other submersibles useful for mine laying."