Donald Tusk, the European Council president, has called for a ceasefire in the verbal hostilities over Brexit with Theresa May, warning that talks could become “impossible” if calm is not restored. Earlier this week, Mrs May accused EU officials of trying to sabotage her election campaign and is unhappy about an unflattering leaked account in the German press of fractious Downing Street dinner with Jean-Claude Juncker the European Commission president. Diplomats in Brussels were quick to conclude that the UK Prime Minister was deliberately stoking Brexit tensions to boost her own election prospects in June polls but there was also concern that any failure to settle the row may undermine Brexit talks before they even begin. The Commission has been widely blamed for the leak to the Frankfurter Allgemeine Zeitung, which suggested Mrs May was living “in another galaxy”. Despite deep divisions between Brussels and London over the sequencing of the Brexit talks and the scale of UK’s divorce bill, diplomats expect the dispute to lessen in the near future.