Iran says it temporarily closed parts of the Strait of Hormuz, one of the world's most crucial shipping lanes, for a military drill and missile test. The narrow passage connecting the Persian Gulf to the outside world is the route for a fifth of the world's oil supplies. The extent and impact of Tuesday's closure were not immediately clear, though Iranian media said it would last for several hours. The closure was a signal from Iran of the potential fallout if the United States goes through with threats to attack.
