The agreement contains a complex set of provisions in a number of areas, including: the vague wording of some provisions known as ”constructive ambiguities” helped ensure the adoption of the agreement and served to postpone debate on some of the most controversial issues. These include extra-military dismantling, police reform and the standardisation of Northern Ireland. On 10 April 1998, the so-called Good Friday Agreement (or Belfast Agreement) was signed. The agreement helped end a period of conflict in the region, known as a riot. The participants in the agreement were composed of two sovereign states (the United Kingdom and the Republic of Ireland), with armed forces and police forces involved in the riots. Two political parties, Sinn Féin and the Progressive Unionist Party (PUP), were linked to paramilitary organisations: the IRA (Commissional Irish Republican Army) and the Ulster Volunteer Force (UVF). The Ulster Democratic Party (UDP), associated with the Ulster Defence Association (UDA), had withdrawn from the talks three months earlier. In 1998, a peace agreement was signed between northern political groups. It became known as the Belfast Agreement. It was also called a Good Friday Agreement because it was agreed on The Good Friday of Easter Week 1998. At the commemoration of the 1916 Easter Rose, Ahern stated that london`s direct rule ended in Northern Ireland when power was formally transferred to the new North-South Ministerial Assembly, the North-South Council of Ministers and the British Council of Ireland, when the opening decisions of the Anglo-Irish Agreement came into force on 2 December 1999.    Article 4, paragraph 2 of the Anglo-Irish Agreement (the agreement between the British and Irish governments on the implementation of the Belfast Agreement) required both governments to inquire in writing about compliance with the terms of entry into force of the Anglo-Irish Agreement; The latter is expected to come into effect as soon as both notifications are received.
 The British government has agreed to participate in a televised ceremony at Iveagh House in Dublin, the Irish Foreign Office. Peter Mandelson, Minister of Northern Ireland, participated in his participation in early December 2, 1999. He exchanged notifications with David Andrews, the Irish Foreign Secretary. Shortly after the ceremony, at 10:30 a.m., the Taoiseach, Bertie Ahern, signed the declaration of formal amendment of Articles 2 and 3 of the Irish Constitution. He then informed the D`il that the Anglo-Irish agreement had entered into force (including some endorsements to the Belfast Agreement).   The agreement sets out a framework for the creation and number of institutions in three ”strands.” The agreement came after many years of complex discussions, proposals and compromises. A lot of people have made a great contribution. Tony Blair and Bertie Ahern were the leaders of the United Kingdom and the Republic of Ireland at the time.
The presidency was chaired by U.S. Special Envoy George Mitchell.  The main themes addressed by Sunningdale and dealt with in the Belfast Agreement are the principle of self-determination, the recognition of the two national identities, Anglo-Irish intergovernmental cooperation and legal power-sharing procedures, such as inter-community voting and the D`Hondt system for appointing ministers to the executive.   Former IRA member and journalist Tommy McKearney says the main difference is the British government`s intention to negotiate a comprehensive agreement including the IRA and the most intransigent unionists.  With regard to the right to self-determination, two qualifications are recorded by the writer Austen Morgan.