After South Korea became the first of Iran’s major oil customers to reduce imports to zero under American pressure, the nation’s biggest refiner is seeking alternative supplies to fill the gap. And U.S. crude is on the list. SK Innovation Co. is increasing purchases from America to make up for the drop in Iranian oil shipments before U.S. sanctions come into effect, according to a company spokesperson. Russia and Australia are other options, with the refiner already buying condensate, an ultra-light crude oil variety, from Russian producers, said the official, who asked not to be named because of internal policy. With U.S. pressure set to be more intense than during the Obama administration, the world’s oil buyers are […]