CNBC | Oil slips 2% as rising inventories offset hopes for output deal CNBC Oil futures fell on Wednesday, after a surprise rise in U.S. inventories wiped out the optimism that had built up the day before over the potential for the world's largest exporters to cut output enough to stem a 19-month-long price slide. Another ... Oil falls as inventory build dashes optimism over supply Why a Russian-Saudi Deal on Oil Output Cut Remains Elusive Canadian dollar up more than a penny after uptick in oil prices |