Boris Johnson must fulfil his one-nation pledge

The FT view on the Conservative Party landslide victory in December 2019. "As mayor of London, he was a liberal, one-nation Tory with broad appeal. He now has a historic opportunity to lead the nation in the same way." The FT view on Prime Minister Boris Johnson's duty to avoid the economic harm of an ultra-hard Brexit - and why he now needs to govern in the interests of all if he wants to succeed.