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

Boris Berezovsky

Vladimir Gusinsky

Vladimir Potanin

Mikhail Fridman

Roman Abramovich

Vladimir Potanin
Age: 42
Business: Metals magnate with major shareholding in Norilsk Nickel, the world's biggest nickel producer.
Worth: About $1bn.
Pedigree: Former Soviet trade official turned financier. Dabbled in media, oil and telecoms before settling on metals in 1990s.
Hobbies: Art, philanthropy