President Donald Trump told Axios on Sunday that the U.S. is “only semi-negotiating” with Iran, after he insisted last week that Washington and Tehran were in fact holding talks. Trump indicated that he would rely on the U.S. naval blockade to pressure Tehran rather than another wave of airstrikes. “We are just watching Iran with its huge inflation and the fact they have no money,” the president told Axios. The U.S. ultra-low sulfur diesel futures contract rose 7.4% to settle at $4.19 a gallon on Monday, the biggest gains since July 13. European ​diesel refining margins, measured as the difference between the price of fuel ​and the cost of crude oil, rose nearly 10%.