U.S. and global oil futures declined on Thursday as a hefty rise in last week’s U.S. supplies and uncertainty surrounding tariff disputes helped to weaken the outlook for crude demand, prompting prices to settle at their lowest levels of the year.

Thanks to abundant supply and fairly flat demand, oil prices are forecast to fall — unless tariffs and geopolitics get in the way.

(Reuters) - Oil prices rose on Monday after U.S. President Donald Trump imposed tariffs on Canada, Mexico and China, raising fears of supply disruption, though gains were capped by concern over what could be an economically damaging trade war.

Oil futures on Wednesday marked their lowest settlement prices of the year, after official U.S. data showed a weekly climb of nearly 9 million barrels in U.S. crude inventories and as the U.S.-China trade battle threatened to dent demand.