Leaving single market and customs union is incompatible with ensuring no borders
John FitzGerald: Deal struck on Friday is ambiguous to cover fact that UK’s future course is undecided
British prime minister Theresa May and European Commission president Jean-Claude Juncker address a media conference at EU headquarters in Brussels on Friday morning. Photograph: AP
Last week’s column highlighted how, 90 years ago, Ireland’s economic relations with the UK were tied up with the future of the Border. Now, achieving a successful agreement on economic relations between the EU and the UK is entangled in the same thicket.