The cause of attacks on the commercial vessels in the strait - a vital corridor for oil - is being investigated.
The message attributed to Mojtaba Khamenei was read by a presenter on Iranian state TV. He has not been seen in public since succeeding his father.
0:28Daylight reveals damaged tankers off Iraq coast. 00:00:28, play videoDaylight reveals damaged tankers off Iraq coast 0:13Hole in Dubai high rise after reported drone hit. 00:00:13, play videoHole ...
Sources have claimed he's lost one leg and suffered serious abdomen injuries.
Scientists offer new insight into how the body detects light touch and how disruptions in that process may contribute to sensory disorders.
Harvard University turned over the photos to the International African American Museum in Charleston after a seven-year legal fight.