A massive explosion and fire has rocked a port in southern Iran purportedly linked to a shipment of a chemical ingredient used to make missile propellant.

Iranian authorities have said there was a “failure to observe safety principles” at the port of Bandar Abbas, where an explosion Saturday killed dozens of people, but testing is required to determine ...

One maritime risk firm says it believes the affected containers held solid fuel for use in ballistic missiles.

The explosion that rocked an Iranian port had its epicenter at a facility ultimately owned by a charitable foundation overseen by Supreme Leader Ayatollah Ali Khamenei’s office.

The explosion occurred as Iran began a third round of nuclear talks with the United States, but there was no immediate indication of a link between the two events.