What Is the Irish Backstop, and Why Is It Holding Up Brexit? The measure aims to guarantee that no physical barrier will spring up between the Republic of Ireland and Northern Ireland. It sounds simple, but it’s not. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:26 Killed in Burundi Attack, Minister Says, Blaming TerroristsChina Blocks a Memorial Service to Sichuan Earthquake VictimsNorth Korea Invites World to Watch the Closing of Nuclear Test SiteMass Shooting in Australia Leaves a Tiny Community in Shock and Grief‘I Can Finally Dream’: Tunisia Expands Protection for Battered WomenIn Canada, Theories Swirl With the Tide as 14th Human Foot Washes Ashore