USD/RUB

USD (US dollar)
Currency unit of the United States of America, Salvador and the Marshall Islands. The world’s main reserve currency.
Issued by: Federal Reserve System (Fed)
The price dynamics depend on the interest rates of the Fed., inflation and growth rates of the USA.

RUB (Russian ruble)
Currency unit of Russia, which is also used in the territory of the Republic of Abkhazia, the Republic of South Ossetia. It belongs to a group of commodity currencies.
Issued by: Bank of Russia
The price dynamics mainly depend on oil prices.