Guinea was admitted to the UN on 12 December 1958 and is a member of ECA and all the non-regional specialized agencies except IAEA. It is a signatory of the Law of the Sea and a member of the WTO. Guinea also belongs to the African Development Bank, the ACP, ECOWAS, G-77, and AU; the nation hosted the ECOWAS summit conference in 1983. Guinea became a partner with Sierra Leone and Liberia in the Mano River Union in 1980, when it also joined Gambia and Senegal as a member of the Gambia River Development Organization. In addition, Guinea belongs to the Niger Basin Authority and the Organization of the Islamic Conference.
The International Bauxite Association was established in Conakry in 1974 with Guinea as a charter member. In 1975, Guinea signed the Lomé Convention, providing for aid and trade relations with the EC.