The dollar rose sharply on Friday, hitting a six-week high versus the yen.
The Russian Central Bank is leaving rates where they are at 11-percent.
The dollar hit a one-week low against the euro on Thursday after a plunge in U.S. durable goods orders.
Commodity-linked major currencies including the Australian and New Zealand dollars surged on Thursday as oil traded back above $33 a barrel.
The safe-haven yen and the low-yielding euro halted their rise on Tuesday, as stock markets and oil prices recovered.
The dollar edged down on Monday as renewed selling on oil markets drove investors into currencies often deemed less risky investments.
Joseph Dayan, managing director and head of markets at BCS Financial Group, says Russian policymakers' ability to manage a crisis doesn't mean its an attractive destination for business and investment.
The dollar firmed Friday, boosted by expectations of monetary easing by in Europe and Japan, and by strong U.S. housing data.
William Browder, Hermitage Capital CEO, discusses how the plunge in oil prices and sanctions are raising alarm bells in Russia.
The dollar turned negative against the euro on Thursday, reversing a morning rally.
The dollar fell to a more than one-year low against the Japanese yen as crude oil prices dropped near 13-year lows.
Andrey Kostin, president of VTB Bank, comments on the possibility of the Russia government selling its stake in Sberbank and VTB, and says he is prepared to work with any shareholders.
The dollar posted modest gains on Tuesday, as investor risk appetite improved on the back of rising oil prices and the expectation of further stimulus in China.
A recovery in stock markets helped the dollar gain ground against Europe's current safe havens of choice, the euro and the Swiss franc.
Markets are pricing in an economic collapse in emerging markets and that's a buying opportunity, Templeton Global Macro's CIO Michael Hasenstab told CNBC.
The dollar tumbled to a near five-month low against the yen and a 2-1/2-week trough versus the euro on Friday.
The dollar rose on Thursday, bolstered by gains in the U.S. stock market and a rebound in oil prices.
President Vladimir Putin has sounded more conciliatory toward the West recently, and there may be more of that coming.
The euro regained its footing against the U.S. dollar as risk appetite soured anew late in the afternoon.
The dollar rose for a third straight session as gains on Wall Street and calmer financial markets enhanced risk appetite.