In 1904, a British expedition to Tibet, spurred in part by a fear that Russia was extending its power into Tibet as part of the Great Game, was launched. Although the expedition initially set out with the stated purpose of resolving border disputes between Tibet and Sikkim, it quickly turned into a military invasion. The British expeditionary force, consisting of mostly Indian troops, quickly invaded and captured Lhasa, with the Dalai Lama fleeing to the countryside. Afterwards, the leader of the expedition, Sir Francis Younghusband, negotiated the Convention Between Great Britain and Tibet with the Tibetans, which guaranteed the British great economic influence but ensured the region remained under Chinese control. The Qing imperial resident, known as the Amban, publicly repudiated the treaty, while the British government, eager for friendly relations with China, negotiated a new treaty two years later known as the Convention Between Great Britain and China Respecting Tibet. The British agreed not to annex or interfere in Tibet in return for an indemnity from the Chinese government, while China agreed not to permit any other foreign state to interfere with the territory or internal administration of Tibet.