Reuters | Oil has best monthly gain in six years but rally may hit 'speed bumps' Reuters After the June-to-January selloff that halved oil prices from highs above $100 a barrel, Brent and U.S. crude posted their strongest recovery this month, rising about $12 each, and hitting their highs for 2015. Those were the best gains since May 2009 ... Oil Prices Post Biggest Monthly Gain Since 2009 Energy Watch: Oil has best monthly gain in 6 years - but rally may hit 'speed ... Oil prices to stay weak for at least a year |