For the next 36 years, the 13th Dalai Lama and the regents who succeeded him governed Tibet. During this time, Tibet fought Chinese warlords for control of the ethnically Tibetan areas in Xikang and Qinghai (parts of Kham and Amdo) along the upper reaches of the Yangtze River. In 1914, the Tibetan government signed the Simla Convention with Britain, which recognized Chinese suzerainty over Tibet in return for a border settlement. China refused to sign the Convention and lost its suzerain rights. When in the 1930s and 1940s the regents displayed negligence in affairs, the Kuomintang Government of the Republic of China took advantage of this to expand its reach into the territory. On December 20, 1941, Kuomingtang leader Chiang Kai-Shek noted in his diary that Tibet would be among the territories which he would demand as restitution for China following the conclusion of World War II. From 1950 to present Emerging with control over most of mainland China after the Chinese Civil War, the People's Republic of China annexed Tibet in 1950 and negotiated the Seventeen Point Agreement with the newly enthroned 14th Dalai Lama's government, affirming the People's Republic of China's sovereignty but granting the area autonomy. Subsequently, on his journey into exile, the 14th Dalai Lama completely repudiated the agreement, which he has repeated on many occasions. According to the CIA, the Chinese used the Dalai Lama to gain control of the military's training and actions. The Dalai Lama had a strong following as many people from Tibet looked at him not just as their political leader, but as their spiritual leader. After the Dalai Lama's government fled to Dharamsala, India, during the 1959 Tibetan Rebellion, it established a rival government-in-exile. Afterwards, the Central People's Government in Beijing renounced the agreement and began implementation of the halted social and political reforms. During the Great Leap Forward, between 200,000 and 1,000,000 Tibetans may have died and approximately 6,000 monasteries were destroyed during the Cultural Revolution—destroying the vast majority of historic Tibetan architecture. In 1980, General Secretary and reformist Hu Yaobang visited Tibet and ushered in a period of social, political, and economic liberalization. At the end of the decade, however, before the Tiananmen Square protests of 1989, monks in the Drepung and Sera monasteries started protesting for independence. The government halted reforms and started an anti-separatist campaign. Human rights organisations have been critical of the Beijing and Lhasa