Ireland, also known as the Republic of Ireland is a country in north-western Europe occupying 26 of 32 counties of the island of Ireland. The capital and largest city is Dublin, which is located on the eastern side of the island. Around 40% of the country's population of 4.9 million people resides in the Greater Dublin Area. The sovereign state shares its only land border with Northern Ireland which is part of the United Kingdom. It is otherwise surrounded by the Atlantic Ocean, with the Celtic Sea to the south, St George's Channel to the south-east, and the Irish Sea to the east. It is a unitary, parliamentary republic. The legislature, the Oireachtas, consists of a lower house, Dáil Éireann, an upper house, Seanad Éireann, and an elected President (Uachtarán) who serves as the largely ceremonial head of state, but with some important powers and duties. The head of government is the Taoiseach (Prime Minister, literally 'Chief', a title not used in English), who is elected by the Dáil and appointed by the President; the Taoiseach in turn appoints other government ministers.
A major financial hub in Europe centred around Dublin, Ireland ranks among the top ten wealthiest countries in the world in terms of GDP per capita, although this has been partially ascribed to be inflated due to tax inversion practices of some multinationals operating in Ireland. From 2017, a modified gross national income (GNI*) was enacted by the Central Bank of Ireland, as the standard deviation was considered too materially distorted to accurately measure or represent the Irish economy. After joining the EC, the country's government enacted a series of liberal economic policies that resulted in economic growth between 1995 and 2007 now known as the Celtic Tiger period, before its subsequent reversal due to the 2008 financial crisis.
A developed country, Ireland performs well in several national performance metrics including healthcare, economic freedom and freedom of the press. Ireland is a member of the European Union and is a founding member of the Council of Europe and the OECD. The Irish government has followed a policy of military neutrality through non-alignment since immediately prior to World War II and the country is consequently not a member of NATO, although it is a member of Partnership for Peace and aspects of PESCO.