LONDON—Britain said on Tuesday it would take all necessary steps to protect peace in Northern Ireland as it urged the European Union to show new imagination in talks to resolve problems with post-Brexit trading rules.
London and Brussels have been trying for months to break the deadlock over the deal, which in effect created a customs border in the sea between Northern Ireland and the rest of the United Kingdom to preserve the province’s open land border with E.U. member state Ireland.
Britain wants a full overhaul of the agreement and has hinted at the possibility of unilaterally suspending part of it if no new deal can be reached with the E.U., while the E.U. is looking for changes within the terms of the existing deal.