"If any disruption happens regarding the sale of Iranian oil, the Strait of Hormuz will definitely be closed," Mohammad Kossari, deputy head of parliament's foreign affairs and national security committee, told Fars news agency a day after U.S., French and British warships sailed back into the Gulf.

"If America seeks adventures after the closure of the Strait of Hormuz, Iran will make the world unsafe for Americans in the shortest possible time," Kossari added, referring to an earlier U.S. pledge to use its fleet to keep the passage open.