Oil prices were mostly steady on Friday, ending the week slightly lower as trade tensions stoked by a U.S. move to hike tariffs on Chinese goods overshadowed tightened global supplies and expectations of rising U.S. refining demand. Brent crude oil settled 23 cents, or 0.4%, higher at $70.62 a barrel, but posted a weekly loss of 0.3%. U.S. West Texas Intermediate (WTI) crude futures ended 4 cents lower at $61.66, with a weekly loss of 0.5%. After a volatile week, investors were worried over the possibility of a protracted and bitter U.S.-China trade war, despite last-minute efforts to salvage a deal. U.S. President Donald Trump on Friday said he was in no hurry to sign a trade […]