In terms of size, Russia is the largest country in Asia as well as the world in terms of size, with more than 17 million square miles. In fact, Russia occupies more than 11 percent of the Earth's surface.
Although Russia is the largest country in Asia in terms of size, China is the most populous country in the world, with a population of more than 1 billion people. China is the second-largest country in Asia in terms of size. Another Asian country, India, is predicted to overtake China as the most populous nation, although it is considerably smaller in size than either Russia or China.