NICOSIA -- In the first such claim, Iran said it was imposing a blockade on unauthorized ships in the Strait of Hormuz. A senior commander for Iran's Islamic Revolution Guards Corps said all ships, including those from the U.S. Navy, must undergo inspection before proceeding through the strait. "The alien vessels which enter the Persian Gulf via the Strait of Hormuz always provide the needed answers and information to the Islamic Revolutionary Guards Corps units," IRGC deputy navy commander Rear Adm. Alireza Tangsiri said.