First Published in 1990. Viewed from the perspective of Whitehall, Persia was a crossroads where Britain's European and Indian interests met. Control of Persia by any European power was bound to jeopardize the security of British India. At first London and India hesitantly experimented with the policy of bringing Persia into the British sphere of influence either by contracting an alliance with her or by turning her into a protectorate. Persia's crushing defeat in the war with Russia put an end to these experiments. The Turkomanchai Treaty of 1828 firmly established Russian influence at Tehran. For the rest of the nineteenth century, the basic thrust of British policy was to prevent Russia from taking control of Persia and, at the same time, to avoid a serious dispute with her over Persia. So Persia had to be preserved as a buffer state. This volume charts the history of Persian Polices from 1918 to 1925.