Russia's richest man pleads not guilty

Russia’s richest man, ex-Yukos CEO Mikhail Khodorkovsky, has pleaded not guilty to a raft of charges that could jail him for 10 years, while authorities tightened the grip on the beleaguered oil company’s key production assets.

Khodorkovsky, who was arrested at gunpoint nearly eight months ago in a Siberian airport, faces charges including tax evasion, fraud, misappropriation and forgery.