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.  Regardless of northern Ireland`s constitutional status within the United Kingdom or part of a united Ireland, the right of the “people of Northern Ireland” to “accept themselves as Irish or British or both” (as well as their right of British or Irish citizenship, or both) has been recognized. The words “people of Northern Ireland” means “all persons who were born in Northern Ireland and who, at the time of their birth, have at least one parent of British nationality, who is an Irish citizen or who has the right to stay in Northern Ireland without limitation of their stay”  Sovereignty issues , civil and cultural rights, dismantling of weapons, demilitarization, justice and the police were essential to the agreement. 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 The Ulster Democratic Party (UDP), associated with the Ulster Defence Association (UDA), had withdrawn from the talks three months earlier. The agreement was for Northern Ireland to be part of the United Kingdom and remain in place until a majority of the population of Northern Ireland and the Republic of Ireland wished otherwise. If this happens, the British and Irish governments will be “obliged” to implement this decision. In the context of political violence during the riots, the agreement forced participants to find “exclusively democratic and peaceful means to resolve political differences.” These were two aspects: the main themes addressed by Sunningdale in the Belfast Agreement are the principle of self-determination, the recognition of the two national identities, Anglo-Irish intergovernmental cooperation and legal procedures for compulsory power-sharing, such as the inter-community vote 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.