The blast occurred as Iran began a third round of nuclear talks with the United States in Oman. The cause wasn't immediately clear.

While Tehran could use the disaster to gain international sympathy, it also means that the Islamic Republic must investigate its own failings, which could reveal weaknesses.

Dark plumes of smoke engulfed the Texas skies after an explosion occurred at an oil refinery in Port Arthur. While officials ...

An Indian national died after an explosives-laden boat hit an oil tanker off Muscat, which led to an explosion and a fire, ...