The Iranian navy frigate IS Alvand passes through the Suez Canal at Ismailia, Egypt, on Tuesday, accompanied by the supply ship IS Kharg (not pictured) en route to Syria on a training mission. (Associated Press)

The Iranian navy frigate IS Alvand passes through the Suez Canal at Ismailia, Egypt, on Tuesday, accompanied by the supply ship IS Kharg (not pictured) en route to Syria on a training mission. (Associated Press)