President Trump recently blamed Ukrainian attacks on Russian refineries for causing a spike in diesel prices, but analysts say the Iran war is probably a bigger factor.
Oil companies and governments are consuming their once vast stockpiles as Iran and the United States continue to struggle for control over the Strait of Hormuz.
For a mega-refinery in Ulsan, South Korea, a top exporter of jet fuel to the West Coast of the United States and other places, weaning off Middle Eastern oil is no small feat.
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