Brent crude advanced for the first time in five days amid freezing weather and signs of economic recovery in the U.S. and concern that clashes in Iraq may disrupt oil exports. Futures advanced as much as 1 percent in London . The coldest air in almost 20 years is sweeping over the central U.S. toward the East Coast, bolstering energy demand. U.S. service industries probably rebounded last month, according to a Bloomberg forecast before data today. Iraqi security forces, militias or tribesmen may start an attack to retake Fallujah from al-Qaeda-linked militants, a government official said. “The recent gain in prices is likely a combination of the cold weather in the U.S., wobbly security situation in Iraq and traders finding their feet in 2014,” said Michael Poulsen, an analyst at Global Risk Management Ltd. in Middelfart, Denmark . “Liquidity is still rather subdued.” Brent for February settlement gained as […]