Pacific Rim is a political and economic term used to designate the countries on the edges of the Pacific Ocean as well as the various island nations within the region. There are many economic centres around the Pacific Rim, such as Shanghai, Hong Kong, Singapore, Seoul, Tokyo, Manila, Los Angeles, Sydney, Melbourne, Auckland, Santiago, San Francisco, Seattle, and Vancouver. Honolulu is the headquarters of various intergovernmental and non-governmental organizations of the Pacific Rim including the East-West Center, Institute of Asian Research and RIMPAC.