most of boundary with India in dispute; dispute over at least two small sections of the boundary with Russia remains to be settled, despite 1997 boundary agreement; portions of the boundary with Tajikistan are indefinite; 33-km section of boundary with North Korea in the Paektu-san (mountain) area is indefinite; involved in a complex dispute over the Spratly Islands with Malaysia, Philippines, Taiwan, Vietnam, and possibly Brunei; maritime boundary agreement with Vietnam in the Gulf of Tonkin awaits ratification; Paracel Islands occupied by China, but claimed by Vietnam and Taiwan; claims Japanese-administered Senkaku-shoto (Senkaku Islands/Diaoyu Tai), as does Taiwan