Carney, 59, a Harvard grad, will oversee his country at a time when it is locked in a trade war with the United States, its largest trading partner.

Mark Carney will be sworn in as the 24th Prime Minister of Canada, a political novice stepping onto the ice at a moment of maximum peril, both for his party and his country.Carney, who many years ago was the backup goalie for Harvard’s hockey team,