Until 1914, this region of India was under the control of Tibet. However, under the Simla Agreement of 1913-14, the area came under the control of the British Raj. Tibet gave up several hundred square miles of its territory, including the whole of the Tawang region and the monastery, to the British. This disputed territory was the bone of contention for the 1962 India China war, when China invaded India on 20 October 1962 from the northeastern border, forcing the Indian army to retreat. They occupied Tawang, including the monastery, for six months, but did not desecrate it. China claimed that Tawang belonged to Tibet. It is one of the few monasteries of Tibetan Buddhism that have remained protected from Mao's Cultural Revolution without any damage. Before this war, in 1959, the 14th Dalai Lama had fled from Tibet, and after an arduous journey, crossed into India on 30 March 1959, and had reached Tawang and taken shelter in the monastery for a few days before moving to Tezpur. 50 years later, in spite of strong protests by China, the Dalai Lama's visit on 8 November 2009 to Tawang Monastery was a monumental event to the people of the region, and the abbot of the monastery greeted him with much fanfare and adulation.