英俄协约关于西藏部分规定,保持西藏领 土完整,英俄双方不能吞并西藏,中国(清)是西藏的宗主国,任何关于西藏拉萨政府的事物双方都必须通过中国政府来解决。(原文:In conformity with the admitted principle of the suzerainty of China over Tibet, Great Britain and Russia engage not to enter into negotiations with Tibet except through the intermediary of the Chinese Government)