U.S. Sanctions Start to Pinch Shipping in Iran Tanker and container operators prepare to wind down business with Iran ahead of U.S. sanctions By Costas Paris and Joanne Chiu May 29, 2018 5:30 a.m. ET It will be months before new U.S. sanctions against Iran take hold, but global shipping operators are already pulling back from the big oil-exporting nation. The world’s two biggest shipping lines, Denmark’s Maersk Line and Swiss-based Mediterranean Shipping Co., said they were winding down general cargo shipments, while tanker owners said they plan to move their vessels to other oil-producing countries in the Middle East...