MarketWatch | Oil futures struggle to hold gains as dollar climbs MarketWatch Oil futures struggled Friday to hold on to gains as the U.S. dollar moved decisively higher following comments from Federal Reserve Chairwoman Janet Yellen and Fed Vice Chair Stanley Fischer that point to the potential for an increase in interest rates ... Oil Prices Near Flat As Dollar Rises Oil slides as signals stay confused on output freeze Iran says will cooperate with OPEC to stabilize the oil market |