Oil extends gains on hopes for non-OPEC output cuts

Oil prices extended gains on Friday, buoyed by growing optimism that non-OPEC producers might agree to cut output following a cartel agreement to limit production. Oil producers will meet in Vienna on Saturday to see if non-OPEC countries will cut production to reduce a global supply glut that has pressured prices for more than two years. OPEC has agreed to slash production by 1.2 million bpd in the first half of 2017, a deal that bolstered crude futures despite doubts over whether the amount wa