Iranian Navy soldiers at an armed speed boat in Persian Gulf near the strait of Hormuz about 1320km (820 miles) south of Tehran, April 30, 2019.Iran partially closed the strategically vital Strait of Hormuz on Tuesday, state media reported, citing "security precautions" as Tehran's Revolutionary Guards conduct military drills in the waterway.It comes as the U.S. and Iran hold talks in the Swiss city of Geneva, seeking to resolve an ongoing dispute over Tehran's nuclear program.It marks the first time Iran h ...