The history of Tibet from 1950 to the present includes the Chinese invasion of Tibet in 1950, and the Battle of Chamdo. Before then, Tibet had been a "de facto" independent state/province under the governance of the Republic of China. In 1951, Tibetan representatives in Beijing signed the Seventeen-point Agreement under duress, which affirmed China's sovereignty over Tibet while it simultaneously provided for an autonomous administration led by Tibet's spiritual leader, and then-political leader, the 14th Dalai Lama. During the 1959 Tibetan uprising, when Tibetans arose to prevent his possible assassination, the Dalai Lama escaped from Tibet to northern India where he established the Central Tibetan Administration, which rescinded the Seventeen-point Agreement. The majority of Tibet's land mass, including all of U-Tsang and areas of Kham and Amdo, was officially established in 1965 as Tibet Autonomous Region, within China.