Celtic tribes arrived on the island between 600 and 150 B.C. Invasions by Norsemen that began in the late 8th century were finally ended when King Brian BORU defeated the Danes in 1014. Norman invasions began in the 12th century and set off more than seven centuries of Anglo-Irish struggle marked by fierce rebellions and harsh repressions. The Irish famine of the mid-19th century was responsible for a drop in the island's population by more than one quarter through starvation, disease, and emigration. For more than a century afterward, the population of the island continued to fall, only to begin growing again in the 1960s. Over the last 50 years, Ireland's high birthrate has made it demographically one of the youngest populations in the EU.
The modern Irish state traces its origins to the failed 1916 Easter Monday Uprising that galvanized nationalist sentiment and fostered a guerrilla war resulting in independence from the UK in 1921 with the signing of the Anglo-Irish Treaty and the creation of the Irish Free State. The treaty was deeply controversial in Ireland, in part because it helped solidify the partition of Ireland, with six of the island's 32 counties remaining in the UK as Northern Ireland. The split between pro-Treaty and anti-Treaty partisans led to the Irish Civil War (1922-23). The traditionally dominant political parties in Ireland, Fine Gael and Fianna Fail, are de facto descendants of the opposing sides of the treaty debate. Ireland formally left the British Dominion in 1949 when Ireland declared itself a republic.
Deep sectarian divides between the Catholic and Protestant populations and systemic discrimination in Northern Ireland erupted into years of violence known as the \"Troubles\" that began in the 1960s. In 1998, the governments of Ireland and the UK, along with most political parties in Northern Ireland, reached the Belfast/Good Friday Agreement with the support of the US. This agreement helped end the Troubles and initiated a new phase of cooperation between the Irish and British Governments.
Ireland was neutral in World War II and continues its policy of military neutrality. Ireland joined the European Community in 1973 and the euro-zone currency union in 1999. The economic boom years of the Celtic Tiger (1995-2007) saw rapid economic growth, which came to an abrupt end in 2008 with the meltdown of the Irish banking system. As a small, open economy, Ireland has excelled at courting foreign direct investment, especially from US multi-nationals, which helped the economy recover from the financial crisis and insulated it somewhat from the economic shocks of the COVID-19 pandemic.
the Irish Defense Forces trace their origins back to the Irish Volunteers, a unit established in 1913; the Irish Volunteers took part in the 1916 Easter Rising and the Irish War of Independence, 1919-1921
Ireland has a long-standing policy of military neutrality; however, it participates in international peacekeeping and humanitarian operations, as well as crisis management; Ireland is a signatory of the EU’s Common Security and Defense Policy and has committed a battalion of troops to the EU’s Rapid Reaction Force; Ireland is not a member of NATO but has a relationship going back to 1997 when it deployed personnel in support of the NATO-led peacekeeping operations in Bosnia and Herzegovina; Ireland joined NATO’s Partnership for Peace program in 1999; Ireland has been an active participant in UN peacekeeping operations since the 1950s
(2023)" } }, "Terrorism": { "Terrorist group(s)": { "text": "Continuity Irish Republican Army; New Irish Republican Army; Islamic State of Iraq and ash-Sham (ISIS)", "note": "note: details about the history, aims, leadership, organization, areas of operation, tactics, targets, weapons, size, and sources of support of the group(s) appear(s) in Appendix-T" } }, "Transnational Issues": { "Disputes - international": { "text": "Ireland-Denmark: Ireland, Iceland, and the UK dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm; Iceland, Norway, and the Faroe Islands signed an agreement in 2019 extending the Faroe Islands’ northern continental shelf area
" }, "Refugees and internally displaced persons": { "refugees (country of origin)": { "text": "88,435 (Ukraine) (as of 9 July 2023)" }, "stateless persons": { "text": "7 (2022)" } }, "Illicit drugs": { "text": "transshipment point for and consumer of hashish from North Africa to the UK and Netherlands and of European-produced synthetic drugs; increasing consumption of South American cocaine; minor transshipment point for heroin and cocaine destined for Western Europe; despite recent legislation, narcotics-related money laundering - using bureaux de change, trusts, and shell companies involving the offshore financial community - remains a concern" } } }