The discount of Western Canada Select (WCS) heavy crude to the North American benchmark West Texas Intermediate futures (WTI) narrowed on Friday to end what has been a week of uncertainty in oil markets due to the fluctuating trade policy in the U.S.
* WCS for April delivery in Hardisty, Alberta, settled at $12.15 a barrel under WTI, according to brokerage CalRock, after having settled at $12.70 under the U.S. benchmark on Thursday.
* The tumultuous week saw U.S. President Donald Trump on Tuesday apply 25% tariffs to most Canadian goods and 10% to Canadian energy products.
* Canada exports approximately 4 million barrels of oil per day, about 90% of its total crude exports, to the United States.
* But on Thursday, Trump suspended the tariffs for an additional month, though a White House official said not all energy products would be covered by the exemption.
* Globally, oil prices gained on Friday but retreated from session highs after Trump threatened sanctions on Russia if it fails to reach a cease-fire with Ukraine.
(Reporting by Amanda Stephenson in Calgary; Editing by Alan Barona)