Iran Closes Strait of Hormuz; Two Ships Reported Attacked

Iran announced the closure of the Strait of Hormuz on April 18, 2026, citing the ongoing U.S. blockade of Iranian ports as the reason for the decision. The closure was declared by Iran’s Revolutionary Guard Corps (IRGC) navy, which warned that any vessel approaching the strait would be considered hostile and could be targeted ^[1][2].

Reports have emerged of two ships being attacked while attempting to navigate the strait. According to Reuters, a tanker was approached by two IRGC gunboats and came under gunfire approximately 20 nautical miles northeast of Oman. The United Kingdom Maritime Trade Operations (UKMTO) confirmed the incident, stating that the tanker and its crew were reported safe ^[3][4].

Another vessel, a container ship, was also reported to have been hit by gunfire while trying to cross the strait. The Washington Post noted that these incidents have heightened tensions in the region, with concerns over the safety of maritime navigation ^[4].

In response to the incidents, India summoned Iran’s ambassador in New Delhi to express concerns over the shooting involving two Indian-flagged ships in the Strait of Hormuz ^[4].

What Is Known

The IRGC navy has fully closed the Strait of Hormuz, a critical waterway for global oil shipments, until the U.S. lifts its blockade of Iranian ports ^[1][2]. At least two ships have reported being attacked while attempting to cross the strait, with no casualties reported ^[3][4].

What Remains Unclear

It remains unclear whether any diplomatic efforts are underway to resolve the situation and reopen the strait. Additionally, reports of a distress call from a tanker claiming permission to cross the strait have not been independently confirmed ^[4].