As refiners outside the US struggle to adapt to the "new abnormal" for the downstream business, US refiners seem inured to Mideast supply disruptions — at least from the perspective of feedstock requirements. The downstream sector in the world’s largest economy has largely weaned itself from Mideast barrels. On the eve of the US-Israeli attacks on Iran that sparked the largest market disruption in history, crude imports from Gulf countries totaled just 775,000 barrels per day in February, or just 12% of total imports, according to Energy Information Administration (EIA) data.