Tonga was admitted to the UN on 14 September 1999. It participates in ESCAP, FAO, ICAO, IDA, IFAD, IMF, ITU, UNCTAD, UNESCO, UPU, and WHO. Tonga is also a member of the Asian Development Bank, Commonwealth of Nations, G-77, IBRD, and South Pacific Forum. It has also applied for WTO membership. Tongan representatives have attended and taken a leading part at South Pacific conferences. Since 1965, Tonga has received aid under the Australian South Pacific Technical Assistance Program. Tonga has only one diplomatic mission overseas, in the United Kingdom.