CNBC | Oil struggles to hold gains ahead of critical OPEC meeting CNBC Oil prices struggled to hold gains on Tuesday after earlier rising more than 2 percent, ahead of expected output cuts by producer cartel OPEC and a mandated reduction in Canadian supply. International Brent crude oil futures rose 42 cents to $62.11 by ... Oil rises as investors anticipate OPEC production cuts OPEC Oil Exports Jump Ahead Of Meeting Oil Extends Rebound on Output-Cut Expectations |