The Great Game between Victorian Britain and Tsarist Russia was fought across desolate terrain from the Caucasus to China, over the lonely passes of the Parmirs and Karakorams, in the blazing Kerman and Helmund deserts, and through the caravan towns of the old Silk Road-both powers scrambling to control access to the riches of India and the East. When play first began, the frontiers of Russia and British India lay 2000 miles apart; by the end, this...