[JURIST] Russian officials demanded $10 billion more in back taxes from troubled oil giant Yukos on Monday. Yukos, Russia's top oil producer with over 1 million barrels per day, is expected to sell its main unit, Yuganskneftegaz, on Monday. Analysts say that this unit could be purchased by the state, or by gas monopoly Gazprom, for as little as $4 billion. Former Yukos chief Mikhail Khodorkovsky was arrested a year ago and is currently on trial for fraud and tax evasion. The latest demands look to push Yukos past $17 billion in debt. CNN has more. Paper Chase has background on Russia's case against Yukos.