The letter appealed to "make the PRC leadership accountable to uphold the international law and treat Tibet as a matter of great international concern, not China's internal affair." As many as 157 Tibetan nationals from every sector of society have "set fire to themselves in protest against Chinese repressive policies that include political repression, cultural assimilation, population transfer, racial discrimination among others." The delegation also highlighted massive environmental destruction due to exploitation of the Tibetan plateau.