Like virtually all politicians, Prime Minister Mark Carney’s victory speech was filled with promises and pledges to reach across the aisle and govern for all. The public would be right to be skeptical, because few political leaders manage to deliver on such lofty goals. But this time must be different, because as Carney acknowledged, this is a “critical time” in our history, when we are facing not only the upending of our relationship with the United States, but an increasingly hostile and dangerous world.