LONDON — Iran seized a British-flagged oil tanker Friday and briefly detained a second vessel in the Strait of Hormuz, intensifying tensions in the strategic waterway that has become a flashpoint between Tehran and the West.
The seizing of the British tanker marked perhaps the most significant escalation since tensions between Iran and the West began rising in May. At that time, the U.S. announced it was dispatching an aircraft carrier and additional troops to the Middle East, citing unspecified threats posed by Iran.
The ongoing showdown has caused jitters around the globe, with each maneuver bringing fear that any misunderstanding or misstep by either side could lead to war.
Details of what took place Friday remained sketchy after Iran reported that it had seized a British oil tanker in the Strait of Hormuz. The strait at the mouth of the Persian Gulf is a shipping channel for one-fifth of all global crude exports.
The Stena Impero was taken to an Iranian port because it was not complying with “international maritime laws and regulations,” Iran’s Revolutionary Guard declared.
A statement from Stena Bulk, which owns the seized tanker, said it was unable to make contact with the ship after it was approached by unidentified vessels and a helicopter in international waters. A spokesman for the company’s owners said the tanker was in “full compliance with all navigation and international regulations.”
The company said the tanker had 23 crew members of Indian, Russian, Latvian and Filipino nationalities and there were no reports of any of them were injured.
The U.K. has featured prominently in the recent tensions with Iran. Britain’s Royal Marines assisted in the seizure of an Iranian oil supertanker on July 4 by Gibraltar, a British overseas territory off the southern coast of Spain.
Britain said it would release the vessel if Iran could prove it was not breaching European Union sanctions on oil shipments to Syria.
Gibraltar’s government said Friday that its Supreme Court had extended by 30 days the detention of the Panama-flagged Grace, which was loaded with over 2 million barrels of Iranian crude oil.