Russia's oligarchs

London, England, April 3 2007: The exiled Russian billionaire Boris Berezovsky listens during a press conference to launch the Litvinenko Justice Foundation Photograph: Bertrand Langlois/AFP

Bolton, England, April 30 2005: Chelsea owner Roman Abramovich celebrates winning the Premiership with John Terry, Frank Lampard and Eidur Gudjohnsen Photograph: Darren Walsh/Action Images

Moscow, Russia, August 12 2004: Yukos' former CEO Mikhail Khodorkovsky, handcuffed to a guard, leaves the court building Photograph: Mikhail Metzel/AP

Hanoi, Vietnam, November 18 2006: Russian President Vladimir Putin, left, and owner of Russia's OAO Rusal, metals mogul Oleg Deripaska attend a meeting of members of the Apec business consultative council Photograph: Dmitry Astakhov/AP

Moscow, Russia, September 12 2003: Mikhail Friedman, left, currently chairman of the Alfa group and oil firm TNK, talks to journalists, as British Petroleum Chief executive John Browne sits next to him during the press conference Photograph: Yuri Kadobnov/AFP

Moscow, Russia, November 14 2003: Russian industrialist Viktor Vekselberg seen at a congress of the Russian Union of Industrialists and Entrepreneurs, in Moscow Photograph: Mikhail Metzel/AP

Norilsk, Russia, July 2002: Russian billionaire Mikhail Prokhorov Photograph: Oleg Nikishin/Getty