The Union of the Comoros consists of the three islands Njazidja (Grande Comoros), Mwali (Moheli) and Nzwani (Anjouan) while the island of Mayotte remains under French administration. The Politics of the Union of the Comoros take place in a framework of a federal presidential republic, whereby the President of the Comoros is both head of state and head of government, and of a multi-party system. Executive power is exercised by the government. Federal legislative power is vested in both the government and parliament. The precolonial legacies of the sultanates linger while the political situation in Comoros has been extremely fluid since the country's independence in 1975, subject to the volatility of coups and political insurrection.