Which is the capital of Russia?

Moscow is the capital and largest city in Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million residents within the city limits, over 17 million residents in the urban area, and over 20 million residents in the metropolitan area. The city covers an area of 970 square miles, while the urban area covers 2,275 square miles, and the metropolitan area covers over 26,000 square miles. Moscow is among the world's largest cities; being the most populous city entirely in Europe, the largest urban and metropolitan area in Europe, and the largest city by land area on the European continent.

Source: Wikipedia