Which countries agreed to the Good Friday Agreement signed in 1998?

The Good Friday Agreement established a power-sharing administration in Northern Ireland, comprising representatives from both nationalist and unionist parties. It focused on governance, human rights, policing, justice, and the decommissioning of paramilitary weaponry. The agreement also accepted the principle of consent, which states that any changes to Northern Ireland’s constitutional status would require the people’s assent. It promoted tighter cooperation and partnership between Northern Ireland and the Republic of Ireland, as well as cross-border initiatives and institutions aimed at promoting mutual understanding and reconciliation.