This collection of Foreign Office files explores the history of Persia (Iran), Central Asia and Afghanistan from the decline of the Silk Road in the first half of the nineteenth century to the establishment of Soviet rule over parts of the region in the early 1920s. It encompasses the era of “The Great Game” - a political and diplomatic confrontation between the Russian and British Empires for influence, territory and trade across a vast region, from the Black Sea in the west to the Pamir Mountains in the east.