In 2010, the signing of the Hillsborough Agreement enabled the transfer of police and judicial powers to the Northern Ireland Assembly, which began later that year. It also included an agreement on controversial parades that had led to persistent conflicts between communities. Both views have been recognized as legitimate. For the first time, the Irish government agreed, in a binding international agreement, that Northern Ireland was part of the United Kingdom.  The Irish Constitution has also been amended to implicitly recognize Northern Ireland as part of the sovereign territory of the United Kingdom provided that the majority of the population of the island`s two jurisdictions has agreed to a unified Ireland. On the other hand, the language of the agreement reflects a change in the UK`s emphasis on the one-for-eu law to United Ireland.  The agreement therefore left open the question of future sovereignty over Northern Ireland.  London`s direct rule ended in Northern Ireland when power was formally transferred to the new Northern Ireland General Assembly, the Northern-South Ministerial Council and the British Irish Council 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 idea of the agreement was to get the two parties to work together in a group called the Northern Ireland Assembly. The Assembly would take some of the decisions taken previously by the British government in London. On 9 January 2020, the British and Irish governments proposed to northern Ireland`s political parties the “New Decade, New Approach” agreement, which provides for a balanced package of measures to make Northern Ireland`s policy and government more transparent, accountable, more stable, more inclusive and more effective.
Unfortunately, it was not possible to reach an agreement on the implementation of the Stormont House agreement, which deals with the legacy of the past, as a time frame for discussions on the new beginning. The Irish and British governments have committed to continue work on this issue in order to create an agreed basis for the creation of a new institutional framework for the management of the past, as envisaged in the Stormont Agreement. During negotiations on the UK`s planned withdrawal from the European Union in 2019, the EU presented a position paper on its concerns about Britain`s support for the Good Friday agreement during Brexit.