The main oil barrel indexes show a 15% average fall, while most markets worldwide, especially Asian markets, are opening up during early trading hours.

Earlier, U.S. stocks swung sharply during regular trading as uncertainty about the war with Iran increased after Trump had threatened that a “whole civilization will die tonight."

Brent crude oil dropped to $93 a barrel after US president’s announcement and Iran’s pledge to reopen strait of Hormuz under its management