Deripaska: Russian investment is 'lagging' behind

More than 2000 of the planet's most powerful leaders are meeting in the Swiss resort of Davos.

With Dmitry Medvedev giving the opening address, Russia's attempts to attract much-needed investment has been one of the key topics so far.

Tanya Beckett has spoken to Russian billionaire Oleg Derispaska about whether Mr Medvedev's appearance at Davos 2011 was constructive in encouraging foreign investors.

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