Colin Harvey, a board member of pro-Irish unity group "Ireland’s Future" and a Queen's University Belfast academic, says that since the Good Friday Agreement was agreed 25 years ago, the biggest political change has been Brexit, which could make the reunification of the island more likely. Duncan Morrow, Professor of Politics and Conflict Resolution in Ulster University, says that despite the successes of the past quarter of a century, questions are being asked of the post-Good Friday settlement due to the continuing lack of a sitting government at Stormont. IMAGES AND SOUNDBITES