Bangkok is a member of several international organizations and regional city government networks, including the Asian Network of Major Cities 21, the Japan-led Asian-Pacific City Summit, the C40 Cities Climate Leadership Group, the ESCAP-sponsored Regional Network of Local Authorities for Management of Human Settlements in Asia and Pacific (CITYNET), Japan's Council of Local Authorities for International Relations, the World Association of the Major Metropolises and Local Governments for Sustainability, among others.