Soviet Union shares border with Iran
Geography
The Soviet Union covered an area of over 22,402,200 square kilometres (8,649,500 sq mi), and was the world's largest country, a status that is retained by its successor state, Russia. It covered a sixth of Earth's land surface, and its size was comparable to the continent of North America. Its western part in Europe accounted for a quarter of the country's area and was the cultural and economic center. The eastern part in Asia extended to the Pacific Ocean to the east and Afghanistan to the south, and, except some areas in Central Asia, was much less populous. It spanned over 10,000 kilometres (6,200 mi) east to west across eleven time zones, and over 7,200 kilometres (4,500 mi) north to south. It had five climate zones: tundra, taiga, steppes, desert and mountains.
The Soviet Union, similarly to modern Russia, had the world's longest border, measuring over 60,000 kilometres (37,000 mi), or 1+1⁄2 circumferences of Earth. Two-thirds of it was a coastline. The country bordered (from 1945 to 1991): Norway, Finland, the Baltic Sea, Poland, Czechoslovakia, Hungary, Romania, the Black Sea, Turkey, Iran, the Caspian Sea, Afghanistan, China, Mongolia, and North Korea. The Bering Strait separated the country from the United States, while the La Pérouse Strait separated it from Japan.
The Soviet Union's highest mountain was Communism Peak (now Ismoil Somoni Peak) in Tajik SSR, at 7,495 metres (24,590 ft). It also included most of the world's largest lakes; the Caspian Sea (shared with Iran), and Lake Baikal in Russia, the world's largest and deepest freshwater lake.
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