The U.S. told American-flagged ships to stay "as far as possible" from Iranian waters when navigating the Strait of Hormuz amid heightened U.S.-Iran tensions.

New US Maritime Administration advisory comes after first round of indirect talks between Washington and Tehran.

The U.S. told American-flagged ships to stay "as far as possible" from Iranian waters when navigating the Strait of Hormuz amid heightened U.S.-Iran tensions.