Although Prime Minister Johnson and Irish leaders have promised to protect the Good Friday agreement, some Brexit supporters have seized the opportunity to criticise the agreement`s power-sharing institutions, arguing that the pact was obsolete. Some members of the DUP, who opposed the agreement in 1998, also questioned the provisions it adopted. The Belfast Agreement is also known as the Good Friday Agreement, as it was concluded on Good Friday on 10 April 1998. It was an agreement between the British and Irish governments and most of northern Ireland`s political parties on how to govern Northern Ireland. Discussions that led to the agreement have focused on issues that have led to conflict in recent decades. The aim was to form a new de-defyed government for Northern Ireland, where unionists and nationalists would share power. The agreement sets out a framework for the creation and number of institutions in three “parts.” 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 The Ulster Democratic Party (UDP), associated with the Ulster Defence Association (UDA), had withdrawn from the talks three months earlier. On 11 January 2020, on the basis of the New Decade Agreement, the new concept, the executive and the Power-Sharing Assembly, the Executive and the Assembly were reinstated, to the participation of the five main political parties in Northern Ireland.
On 6 May 2002, David Ervine, a politician from the Progressive Unionist Party, said that persistent violence, loyalist doubt and insecurity over the IRA had left the peace process in a “serious and serious crisis”.  On 14 October 2002, the Northern Ireland Assembly was suspended and direct domination of Westminster was imposed.  The Congressional Research Service [PDF] examines the peace process in Northern Ireland. “It is up to the Irish people alone, by mutual agreement between the two parties and without external hindrance, of their right to self-determination on the basis of consent, freely and at the same time given, north and south, to achieve a united Ireland, while accepting that this right be acquired and exercised with the agreement and approval of the majority of the people of Northern Ireland.” 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. Direct domination of London ended in Northern Ireland when power was formally transferred to the new Northern Ireland Assembly, the North-South Council and the Anglo-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.