A major sticking point in the talks between the Dalai Lama and Beijing has been the exiles' demand for a 'Greater Tibet' - an attempt to unite all Tibetan-populated areas into one single political entity comprising up to a quarter of the mainland's territory.
Today's Tibet Autonomous Region largely corresponds to the area ruled by the 13th Dalai Lama in the 18th century. Greater Tibet, on the other hand, refers to Tibet plus Amdo and Kham, which are culturally and religious under heavy Tibetan influence.