Northern Ireland's largest unionist party faces a historic dilemma if EU and British negotiators clinch a post-Brexit trade deal: redraw their red lines or risk signing a death warrant for decades of power-sharing with Irish nationalists.
The Democratic Unionist Party (DUP) could take a chance and endorse a Northern Ireland Protocol deal that is all but certain to fall short of its stringent demands but that would open the door for more radical rivals to outflank the party.
