Liz Truss was blasted as a “national embarrassment” on Monday as she refused to rule out running for Conservative leader again despite her disastrous tenure as the shortest-lived prime minister in history."I have unfinished business, and I think the Conservative Party has unfinished business,” she told LBC when asked if she would stand again if the beleaguered Rishi Sunak quits the role. She added: “It's never wise to rule anything out in politics.”