Billionaire Alisher Usmanov's investment in Alibaba has soared more than 500 percent since he first invested in the group, he told CNBC.
The Russian central bank said it was prepared to support the ruble in foreign exchange markets after it tumbled to new lows on Friday.
George Osborne claimed he had obtained a "result" for Britain after striking a deal with European finance ministers on a surcharge levied on the country.
Ratings agency Standard & Poor's warned on Thursday that the euro zone crisis was entering a "stubborn phase of subdued growth" in what it says is a new stage in the region's economic crisis.
Russia's Prime Minister Dmitry Medvedev tells CNBC that ties with the U.S. have been damaged by "destructive" and "stupid" sanctions.
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