Oil slipped to trade near 2018 lows due to pressure from rising U.S. inventories and doubts over whether an OPEC-led output cut will be agreed in the coming week. The price of Brent Crude has slumped by more than 30% from a 4 year high in early October, as concerns that supply will exceed demand in 2019 as economic growth slows. EIA Crude Oil Stocks Change will be important data to watch on Wednesday at 15:30 to see if the downturn will continue.