At-a-glance: Russia's business oligarchs
Mikhail Khodorkovsky

Boris Berezovsky

Vladimir Gusinsky

Vladimir Potanin

Mikhail Fridman

Roman Abramovich

Roman Abramovich
Age: 37
Business: Industrialist, oil magnate, football boss, governor of Chukotka region in Russia's far Northeast.
Worth: Unknown, estimated to be $6bn-$7bn.
Pedigree: College drop-out who got rich in oil trading after dabbling in airlines and aluminium.
Hobbies: Chelsea FC