There are too many risk factors at play to express any sense of real optimism about a full market return for Libya’s oil, the Royal Bank of Canada said. In a weekend statement, the U.S. government said it was concerned by mounting violence in Libya, where rival factions had taken control over some government buildings in Tripoli. Libya is struggling to return to economic life after years of civil war. Total crude oil production last month from Libya, reported to the Organization of Petroleum Exporting Countries by secondary sources, was 34 percent higher than August, but at 363,000 barrels per day, was still about 20 percent less than the average for last year and far below the pre-war level […]