Russia is the world's largest country. With a total area of 17,075,200 kilometers (6,592,735 square miles), Russia covers about one-eighth of the world's land surface. Russia is 60 percent larger than the world's second-largest country, Canada. But, like Canada, much of Russia's territory is located above the 50th parallel, where subarctic and arctic weather conditions are prevalent. Until the disintegration of the Union of Soviet Socialist Republics (USSR or "Soviet Union") in 1991, the Russian Soviet Federated Socialist Republic was the largest and dominant administrative component of the Soviet Union. In August 1991, the Russian Republic was one of the 15 countries that declared independence from the Soviet Union.
Russia is a vast and diverse nation that continues to evolve politically, economically, and socially. According to the Constitution of Russia, the country is a federation and semi-presidential republic, wherein the President is the head of state and the Prime Minister is the head of government. The Russian Federation is fundamentally structured as a multi-party representative democracy.