Over the past 100 years, the border between what became the Irish Republic and Northern Ireland has been a political challenge for governments north, south, in Westminster and now in Europe. In this timely history of the tragedy that is the border between the Irish Republic and Northern Ireland, leading historian Diarmaid Ferriter charts the realities of the border from the divisive repercussions of the Treaty through checkpoints, devolution, entry into the EU, the Good Friday Agreement, up to present day. This book promises to shed light on one of the most contentious and misunderstood political issues of our time.