FOREXCOM:USDRUB   U.S. Dollar / Russian Ruble
10,053,800 Barrels of Oil daily, Russia is the largest Oil Exporter in the world

Lower oil prices forces Ruble lower, USDRUB goes higher

if, $50 Oil, USDRUB hits 60.00 Ruble per USD

With Ruble FX reserves, they can either intervene their currency or influence the price of Oil by Future Contracts.
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