The Anglo-Irish Agreement was an agreement between the United Kingdom and Ireland which aimed to help bring an end to the Troubles in Northern Ireland. The treaty gave the Irish government an advisory role in Northern Ireland's government while confirming that there would be no change in the constitutional position of Northern Ireland unless a majority of its people agreed to join the Republic. It also set out conditions for the establishment of a devolved consensus government in the region.

The Agreement was signed on 15 November 1985 at Hillsborough Castle, by the British Prime Minister, Margaret Thatcher, and the Irish Taoiseach, Garret FitzGerald.

The agreement established the Anglo-Irish Intergovernmental Conference, made up of officials from the British and Irish governments. This body was concerned with political, legal and security matters in Northern Ireland, as well as "the promotion of cross-border co-operation". It had a consultative role only — no powers to make decisions or change laws were given to it. The Conference would only have power to make proposals "insofar as those matters are not the responsibility of a devolved administration in Northern Ireland". This provision was intended to encourage the unionists (who opposed Irish government involvement in Northern Ireland through the Conference) into power-sharing devolved government. The conference had a permanent secretariat, including officials from the republic's Department of Foreign Affairs, based in the Belfast suburb of Maryfield. The presence of civil servants from the Republic particularly incensed unionists.

Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC, FRS, née Roberts (born 13 October 1925) is a British politician and the longest-serving (1979–1990) British prime minister of the 20th century, and the only woman ever to have held the post. A Soviet journalist nicknamed her the "Iron Lady", which later became associated with her uncompromising politics and leadership style. As prime minister, she implemented conservative policies that have come to be known as Thatcherism.

Originally a research chemist before becoming a barrister, Thatcher was elected Member of Parliament (MP) for Finchley in 1959. Edward Heath appointed her Secretary of State for Education and Science in his 1970 government. In 1975 Thatcher defeated Heath in the Conservative Party leadership election and became Leader of the Opposition, as well as the first woman to lead a major political party in the United Kingdom. She became prime minister after winning the 1979 general election.

After entering 10 Downing Street, Thatcher introduced a series of political and economic initiatives to reverse what she perceived as Britain's precipitous national decline. Her political philosophy and economic policies emphasised deregulation (particularly of the financial sector), flexible labour markets, the privatisation of state-owned companies, and reducing the power and influence of trade unions. Thatcher's popularity during her first years in office waned amid recession and high unemployment, until economic recovery and the 1982 Falklands War brought a resurgence of support, resulting in her re-election in 1983. Thatcher was re-elected for a third term in 1987, but her Community Charge (popularly referred to as "poll tax") was widely unpopular and her views on the European Community were not shared by others in her Cabinet. She resigned as Prime Minister and party leader in November 1990, after Michael Heseltine launched a challenge to her leadership.

The Anglo-Irish Treaty (Irish: An Conradh Angla-Éireannach), officially called the Articles of Agreement for a Treaty Between Great Britain and Ireland, was a treaty between the Government of the United Kingdom of Great Britain and Ireland and representatives of the secessionist Irish Republic that concluded the Irish War of Independence. It established the Irish Free State as a self-governing dominion within the British Empire and also provided Northern Ireland, which had been created by the Government of Ireland Act 1920, an option to opt out of the Irish Free State, which it exercised.

The treaty was signed in London on 6 December 1921 by representatives of the British government (which included Prime Minister David Lloyd George, who was head of the British delegates) and envoys of the Irish Republic, including Michael Collins and Arthur Griffith, who claimed plenipotentiary status (i.e. negotiators empowered to sign a treaty without reference back to their superiors). In accordance with its terms, the Treaty was required to be, and was, ratified by the members elected to sit in the House of Commons of Southern Ireland and the British Parliament. Dáil Éireann for the de facto Irish Republic also ratified the Treaty. Though the treaty was narrowly ratified, the split led to the Irish Civil War, which was ultimately won by the pro-treaty side.

John Hume (born 18 January 1937) is a former Irish politician from Derry, Northern Ireland. He was a founding member of the Social Democratic and Labour Party, and was co-recipient of the 1998 Nobel Peace Prize, with David Trimble.

He was the second leader of the Social Democratic and Labour Party (SDLP), a position he held from 1979 until 2001. He has served as a Member of the European Parliament and a Member of Parliament for Foyle, as well as a member of the Northern Ireland Assembly.

He is regarded as one of the most important figures in the recent political history of Ireland and one of the architects of the Northern Ireland peace process there. He is also a recipient of the Gandhi Peace Prize and the Martin Luther King Award, the only recipient of the three major peace awards. In 2010 he was named "Ireland's Greatest" in a public poll by Irish national broadcaster RTÉ to find the greatest person in Ireland's history.

John Hume was born in Derry and was a student at St. Columb's College and at St. Patrick's College, Maynooth, the leading Catholic seminary in Ireland and a recognised college of the National University of Ireland, where he intended to study for the priesthood. Among his teachers was the future Cardinal Tomás Ó Fiaich.

Ruairí Ó Brádaigh (born 2 October 1932) is an Irish republican. He is a former chief of staff of the Irish Republican Army (IRA), former president of Sinn Féin and former president of Republican Sinn Féin.

Ó Brádaigh, born Peter Roger Casement Brady, was born into a middle-class republican family in Longford that lived in a duplex home on Battery Road. His father, Matt Brady, was an IRA volunteer and was severely wounded in an encounter with the Royal Irish Constabulary, in 1919. His mother, May Caffrey, was a Cumann na mBan volunteer, and graduate of University College Dublin, class of 1922, with a degree in Commerce. His father died when he was ten, and was given a paramilitary funeral led by his former IRA colleagues. His mother, prominent as the Secretary for the County Longford Board of Health, lived until 1974. Ó Brádaigh was educated at St Mel's College, leaving in 1950, and University College Dublin, from where he graduated with a commerce degree (BComm) and certification in the teaching of the Irish language, in 1954. That year he took a job teaching Irish at Roscommon Vocational School, in Roscommon.