As part of the agreement, the British and Irish governments committed to holding referendums in Northern Ireland and the Republic on 22 May 1998. The referendum on Northern Ireland is expected to approve the deal reached at the multi-party talks. The Republic of Ireland`s referendum should approve the Anglo-Irish agreement and facilitate the modification of the Irish constitution in accordance with the agreement. 71% voted in favour of the agreement in Northern Ireland and 94% in the Republic of Ireland. Northern Ireland political parties that approved the agreement were also invited to consider the creation of an independent advisory forum, which would represent civil society, with members with expertise on social, cultural, economic and other issues, and would be appointed by both administrations. In 2002, a framework structure was agreed for the North-South Advisory Forum, and in 2006 the Northern Ireland Executive agreed to support its implementation. One young man said of the agreement: “Erm, I`ve never heard of it. I don`t know. I don`t know what it is. In 2004, negotiations were held between the two governments, the DUP, and Sinn Féin, for an agreement to restore the institutions. The talks failed, but a document published by governments detailing the changes to the Belfast agreement was known as the “comprehensive agreement.” However, on 26 September 2005, it was announced that the Provisional Republican Army of Ireland had completely closed its arsenal of weapons and had “taken it out of service”.
Nevertheless, many trade unionists, especially the DUP, remained skeptical. Among the loyalist paramilitaries, only the Loyalist Volunteer Force (LVF) had decommissioned all weapons.  Further negotiations took place in October 2006 and resulted in the St Andrews Agreement. 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, intergovernmental cooperation between the British and Ireland and legal procedures for compulsory power-sharing, 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. First, the transfer of territory from one state to another must be done through an international agreement between the British and Irish governments. Second, the population of Northern Ireland can no longer be alone in united Ireland; They need not only the Irish government, but also the people of their neighbouring country, Ireland, to support unity.
Mr Morgan also pointed out that, unlike the Irish Act 1949 and the Northern Ireland Constitution Act 1973, drawn up under Sunningdale, the 1998 agreement and the resulting British legislation explicitly provide for the possibility of a unified Ireland.  The conference takes place in the form of regular and frequent meetings between British and Irish ministers to promote cooperation between the two governments at all levels.