Brent crude oil prices continue to tumble and are not expected to recover in 2015. Although OPEC (Organisation of Petroleum Exporting Countries) decided in its most recent meeting on 27 November to maintain oil production at 30 million barrels a day, as it had already decided to do in December 2011, the price of Brent crude continued to fall sharply. This has fallen by almost $10 over the past two weeks, despite the fact that it had already fallen by 35% since its mid-June peak, which means...