During this period Russia expanded its empire into Central Asia, conquering the khanates of Kokand, Bukhara, and Khiva, as well as the Trans-Caspian region. Russia's advance in Asia led to British fears that the Russians planned aggression against British India. Before 1815 London worried Napoleon would combine with Russsia to do that in one mighty campaign. After 1815 London feared Russia alone would do it step by step. Rudyard Kipling called it "the Great Game" and the term caught on. However historians report that the Russians never had any intention to move against India.