The Russian ruble is the official currency of the Russian Federation. It is abbreviated as RUB and is symbolized by the sign ₽. The ruble has a long history, dating back to the 13th century, and has undergone several changes in value and design over the years. The ruble is subdivided into 100 kopecks. It is used for all transactions within Russia and is also traded on international currency markets. The value of the ruble can fluctuate based on various factors, including economic conditions, oil prices, and geopolitical events.