Russia's key stock indexes tumbled more than 5 percent on Tuesday as the price of Brent crude oil fell below the $100-a-barrel level and amid investor worries over Greece's expected default.
The dollar-denominated RTS stock exchange index declined to a two-year low, closing down 5.21 percent to 1,224.40, while the MICEX index plummeted 5.72 percent to 1,267.77, reaching the level of May 2010.
However, the decline slowed after U.S. Federal Reserve Chairman Ben Bernanke said the regulator was ready for additional stimulus measures aimed at boosting economic growth.