Northern Ireland's Peace Accord: 25 Years Later, Troubles Still Linger.

Northern Ireland marks 25 years since the Good Friday Agreement ended the Troubles, but deep divisions remain over the conflict's legacy, making it hard for some of Northern Ireland's 1.9 million people to move past it. Britain's exit from the European Union has only complicated matters, creating political tensions that have rattled the foundations of the peace agreement. The possibility of violence is the reason fortified 25-foot- (8-meter-) high "peace walls" still separate some nationalist and unionist neighborhoods in Belfast.