EXCLUSIVE-Eying Iran, U.S. issues warning to stay 100 meters away from its warships

The U.S. Navy on Tuesday issued a warning to mariners to stay 100 meters (yards) away from U.S. warships or risk being "interpreted as a threat and subject to lawful defensive measures." Reuters is first to report the new warning, issued in detail in a notice to mariners. It follows a threat by U.S. President Donald Trump last month, in which he instructed the U.S. Navy to fire on any Iranian ships that harass American vessels.

A U.S. official, speaking on condition of anonymity, said the new notice to mariners was not a change in the U.S. military's rules of engagement.