Today, Tibet is administered by the People's Republic of China (PRC). Beijing and the Government of Tibet in Exile disagree over when Tibet became a part of China, and whether the incorporation into China of Tibet is legitimate according to international law (see Tibetan sovereignty debate). Since what constitutes Tibet is a matter of much debate, neither its size nor population are simple matters of fact, due to various entities claiming differing parts of the area as a Tibetan region. With the invasion of Tibet in 1950 and the subsequent Seventeen Point Agreement, the PRCasserted control over Tibet.
