Central Asia has long been a geostrategic location because of its proximity to the interests of several great powers and regional powers.
Central Asia had both the advantage and disadvantage of a central location between four historical seats of power. From its central location, it has access to trade routes, or lines of attack, to all the regional powers. On the other hand, it has been continuously vulnerable to attack from all sides throughout its history, resulting in political fragmentation or outright power vacuum, as it is successively dominated.
In terms of strategic geography, Central Asia has several important routes through Eurasia, which conquerors would seek to dominate and utilize.
Passes:
Areas:
From 1813 to 1907 Great Britain and Tsarist Russia were engaged in a strategic competition for domination of Central Asia, known in Britain as "The Great Game", and in Russia as the "Tournament of Shadows." The British sea power and base in the Indian subcontinent served as the platform for a push Northwest into Central Asia, while the Russian empire pushed into the region from the North. The powers eventually met, and the competition played out, in Afghanistan, although the two never went to war with one another (see Durand Line).
The British feared that Russian control of Central Asia would create an ideal springboard for an invasion of Britain's territories in the subcontinent (British India), and were especially concerned about Russia gaining a warm water port. They would fight the First and Second Anglo-Afghan Wars in an attempt to establish control over the region, and to counter the slowly creeping expansion of Russia. Losing badly both times, the British signed the 1907 Anglo-Russian Convention which divided Afghanistan between the two powers and outlined the framework for all future diplomatic relations.
Alfred Thayer Mahan, the father of U.S. geostrategy, outlined the geostrategic divisions of Eurasia in his 1900 piece The Problem of Asia and Its Effect Upon International Policies. He divided Asia into three parts: