Iran on Sunday threatened a "more painful" response to U.S. strikes on three Iranian oil tankers.

The United States said it destroyed three Iranian oil tankers on Saturday in response to attempted missile attacks on naval vessels, with Iran's Revolutionary Guards saying they…

The U.S. said one tanker was struck off Kharg Island and another was struck near Jask, east of the Strait of Hormuz. The unladen tanker was hit in the Gulf of Oman.

Iran has threatened retaliation after the US struck three oil tankers.

•Iran vows more severe reprisals if attacks continue

Iran's Parliament Speaker Mohammad Baqer Qalibaf issued a stern warning to the United States. He stated that the rules of engagement in any conflict have now changed. Qalibaf…