U.S. Sees State Actor Behind Oil Tanker Attacks in Gulf Region

An attack on two oil tankers near the entrance to the Persian Gulf was likely done by a state actor, according to a U.S. official, heightening tensions over a potential military confrontation between the U.S. and Iran. Oil prices surged.

The incidents on Thursday, including an assault on a Japanese-operated vessel, were the second in a month to hit ships near the Strait of Hormuz chokepoint, through which about 40% of the world’s seaborne oil travels. They come as Japanese Prime Minister Shinzo Abe, a rare ally of both Donald...