Australia and Vanuatu have very strong ties. Australia has provided most of the assistance to Vanuatu's military. It is also Vanuatu's largest source of foreign investment, tourists, and foreign aid. Vanuatu also has strong ties to other Pacific countries. It is a full member of the Pacific Islands Forum, and several other regional organisations. It has been a member of the Organisation internationale de la Francophonie since 1979. It was admitted to the Commonwealth of Nations in 1980 and to the United Nations in 1981. Vanuatu is currently the only Pacific nation that belongs to the Non-Aligned Movement.