Futures in New York slipped as much as 2.1 percent to the lowest intraday price since March 20. China’s Ministry of Commerce said it would levy 25 percent tariffs on imports of 106 U.S. products including automobiles and aircraft. That wiped out earlier support for prices as Organization of Petroleum Exporting Countries output dropped to the lowest in a year in March. “It’s only logical to see profit-taking in light of looming trade tensions and possible financial market turbulence,” said Eugen Weinberg, head of commodities research at Commerzbank AG in Frankfurt. Global equities sank after China unveiled its charges, which match the scale of proposed U.S. tariffs announced earlier this week and ratchets up tension in a brewing trade war between the world’s two largest economies. With products ranging from gas turbines to steel and aluminum affected, the spat threatens to raise costs, slow economic growth and hit oil demand. Click Read More below for additional information.

Strong buying emerged in oil markets Tuesday as focus shifted to an expected decline in Iranian crude exports after a senior U.S. State Department official said countries must stop purchasing crude by the start of November or face sanctions. Companies that buy Iranian crude oil must completely halt those exports by Nov. 4 or else they will face powerful U.S. sanctions, a senior State Department official told reporters on Tuesday. Oil prices moved sharply higher as investor focus shifted to the prospect of a void in global supplies as Iran – OPEC's third largest producer – exports more than 2 million barrels per day (bpd). Click Read More below for additional information.

Motor fuel prices slipped 1.2 percent on Friday, the first decline in front-month futures in almost two weeks, after a 25 percent gain in August. Crude in New York extended declines following the worst month since March. About 4.4 million barrels a day of U.S. refining capacity remains shuttered. The government plans to supply 1 million barrels of crude from the Strategic Petroleum Reserve to a Gulf Coast plant, the first emergency release in five years. Hurricane Harvey cut U.S. refining capacity to the lowest level since 2008 after its initial strike on the Texas coast late last week. It returned as a storm to hit Louisiana on Wednesday, bringing torrential rains that shut the biggest U.S. refinery, owned by Motiva Enterprises LLC in Port Arthur, Texas. The lack of production forced Colonial Pipeline Co. to curb flows to a link that carries fuels to the Northeast. Valero Energy Corp. and Royal Dutch Shell Plc told wholesale customers Wednesday they don’t have enough gasoline and diesel to sell. Click Read More below for additional detail.