U.K. Prime Minister Theresa May delayed a critical parliamentary vote on her Brexit bill which led to a rowdy confrontation with lawmakers. Photo: Zuma PressPrime Minister Theresa Maydelayed a critical parliamentary vote Monday on the Brexit agreement she secured with the European Union, citing “widespread and deep concern” among lawmakers about its provisions aimed at avoiding a physical border emerging in Ireland. Here is a look at why the plan for Ireland has become so controversial. Why would a border emerge in Ireland, and why worry about it?

Source: Wall Street Journal December 10, 2018 19:41 UTC