The Dalai Lama's successor will be born outside China, the spiritual leader of Tibetan Buddhism says in a new book, raising the stakes in a dispute with Beijing over control of the Himalayan region he fled more than six decades ago.

Tibetans worldwide want the institution of the Dalai Lama to continue after the 89-year-old's death, he writes in "Voice for the Voiceless," which was reviewed by Reuters and is being released Tuesday.

He had previously said the line of spiritual leaders might end with him.