The United States Dollar (USD) is the world's primary reserve currency and the main medium of exchange in international trade. Its issuance is controlled by the Federal Reserve. Due to its high liquidity, the dollar is used as a benchmark for pricing most other assets.
The Russian Ruble (RUB) is the national currency of the Russian Federation. The ruble operates on a floating exchange rate and depends on various macroeconomic factors, including energy prices, trade balance, and the monetary policies of the Bank of Russia.