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:Pakistan Army ‘Has Greatly Increased Its Clout’ Under New ChiefCanadians Greet Bombardier Decision With Pride and a Little SnarkIreland Prime Minister Says He Will Campaign to Repeal Abortion BanIsrael Slams ‘Baseless’ Holocaust Legislation in PolandAmid Protests, Honduran President Is Sworn In for 2nd TermA Deadly Blast in Kabul