As Liz Truss and Rishi Sunak go head-to-head as the final two in the Tory leadership contest following Boris Johnson’s resignation, one issue that remains unresolved for a new prime minister is the Northern Ireland protocol.
More than six years since the referendum and two and a half years since the UK left the European Union, the issue remains one of the main items of unfinished business that will be left over from the Johnson government.
