Nauru , officially the Republic of Nauru, is an island nation in the Micronesian South Pacific. The nearest neighbour is Banaba Island in the Republic of Kiribati, 300 km due east. Nauru is the world's smallest island nation, covering just 21 km² (8.1 sq. mi), the smallest independent republic, and the only republican state in the world without an official capital.https://www.cia.gov/cia/publications/factbook/geos/nr.html CIA World Fact Book URL accessed 2006-05-02.