Mideast tanker escort: high-risk mission for US Navy

Iran has threatened to block oil exports via the key maritime chokepoint -- through which nearly 20 percent of the world's crude usually transits -- in response to the US-Israeli war against the Islamic republic. President Donald Trump -- who warned of "Death, Fire, and Fury" if Tehran disrupted oil flows -- has also floated the idea of the US Navy accompanying commercial vessels, but Washington's forces have yet to begin the potentially risky mission. "There are a number of threats that Iran...potentially...