U.S. seeks seizure of Iranian oil tanker in new escalation

The global standoff between the United States and Iran over shipping escalated Saturday after the United States issued a warrant for the seizure of an Iranian oil tanker detained in Gibraltar, just hours after the ship was ordered released.
The Grace 1 supertanker was intercepted in waters off Gibraltar by the British navy last month on suspicion that it was delivering oil to Syria in violation of E.U. sanctions. The move triggered the capture by Iran two weeks later of a British oil tanker in the Persian Gulf in apparent retaliation.