LONDON – British Prime Minister Boris Johnson urged lawmakers to vote Tuesday for a new set of coronavirus restrictions in England, saying the country must “hold our nerve” until vaccines are approved and distributed.England’s current four-week national lockdown ends at midnight, and the government plans to replace it starting Wednesday with a three-tier regional system based on the severity of the outbreak in different parts of the country.The change requires Parliament’s approval, and it faces opposition from lawmakers — many from Johnson's own Conservative Party — who say the measures will devastate businesses, especially pubs, which face some of the tightest restrictions.