Three new institutions were added to the agreement: direct domination of London ended in Northern Ireland when power was formally transferred to the new Northern Ireland 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).   These institutional provisions established in these three areas of action are defined in the agreement as “interdependent and interdependent”. In particular, it is found that the functioning of the Northern Ireland Assembly and the North-South Council of Ministers is “so closely linked that the success of individual countries depends on that of the other” and that participation in the North-South Council of Ministers “is one of the essential tasks assigned to the relevant bodies in Northern Ireland and the Republic of Ireland].
The British government is virtually out of the game and neither parliament nor the British people have, as part of this agreement, the legal right to obstruct the achievement of Irish unity if it had the consent of the people of the North and The South… Our nation is and will remain a nation of 32 circles. Antrim and Down are and will remain a part of Ireland, just like any southern county.  The agreement called for the creation of an independent commission to audit police arrangements in Northern Ireland, “including ways to promote broad community support” for these agreements. The UK government has also pledged to carry out a “large-scale review” of the criminal justice system in Northern Ireland. The Good Friday Agreement (GFA) or the Belfast Agreement (irish: Comhaonté Aoine an Chéasta or Comhaonté Bhéal Feirste; Ulster-Scots: Guid Friday Greeance or Bilfawst Greeance) is a couple of agreements signed on 10 April 1998 that put an end to most of the violence of the Troubles, a political conflict in Northern Ireland that had erupted since the late 1960s. This was an important development in the Northern Ireland peace process in the 1990s. Northern Ireland`s current system of de-decentralized government is based on the agreement. The agreement also created a number of institutions between Northern Ireland and the Republic of Ireland, as well as between the Republic of Ireland and the United Kingdom. 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.  On 10 April 1998, the so-called Good Friday Agreement (or Belfast Agreement) was signed.