At a moment when artificial intelligence is reshaping the foundations of economies and societies, Canadian Prime Minister Mark Carney has stepped forward to name what many leaders have hesitated to say plainly: that the risk of AI catastrophe is real, measurable, and above zero. His call for coordinated international governance places Canada in deliberate contrast to the United States, where the current administration has favored industry freedom over regulatory constraint. The divergence between these two neighboring nations may prove to be one of the defining fault lines in how humanity choo