The European Union has warned that it will “respond with all measures at its disposal” if the UK goes ahead with a plan to unilaterally rewrite the most contentious part of their Brexit agreement, sparking fear of a trade war.
How did the two sides once again end up at loggerheads and what is the UK threatening to do? Foreign secretary Liz Truss has made a statement to parliament setting out her intentions on the matter. This is what we know so far.
