Ships in the Gulf of Oman last month.

A banner in Tehran’s Grand Bazaar featuring the supreme leader Ayatollah Ali Khamenei, who was killed in an airstrike at the start of the U.S.-Iran war.

The Strait of Hormuz seen from Musandam, Oman, this month. While the Trump administration has said that a cease-fire would fully lift Iran’s blockade of the strait, that has yet to be borne out.

Ships in the Strait of Hormuz off the coast of Musandam, Oman, on Monday. Many have been stranded since the start of the war.

A strike on the Bapco oil refinery in Bahrain in early March. A U.S. blockade of the Strait of Hormuz may give Iran a reason to restart attacks on energy assets throughout the Persian Gulf.

Cargo ships near the Strait of Hormuz, as seen last month from northern Ras al-Khaimah in the United Arab Emirates.