This article was originally published by the IPI Global Observatory on 10 April 2015.
It is now 17 years since the Good Friday Agreement brought what seemed to be a definitive end to the decades-long sectarian crisis in Northern Ireland. But, in a case that has repercussions for other peace processes such as Israel-Palestine, one of the architects of the agreement says there is still much work to be done before a line can be drawn beneath the conflict once and for all.