Sellers of U.S. sour crude oil have cut their offers for Asian buyers on concern that demand may fall as China threatens to impose tariffs on oil from the United States and Middle East supply may rise after major producers agreed to increase output, multiple trade sources said on Wednesday. Chinese buyers plan to scale back their U.S. high-sulfur, or sour, crude purchases after Beijing said last month it will impose tariffs on U.S. energy products without specifying when they would begin. The tariff decision is part of an escalating trade dispute between the world’s two biggest economies. U.S. oil sellers “are worried about the trade war and they panicked. China’s buying has slowed as most of the refineries are pending (purchases),” said one of the sources, a buyer with a North Asian refiner. The price cut also follows Saudi Arabia’s plan to raise its sour […]