On the twenty-fifth anniversary of a day the world learned how vulnerable open societies could be, researchers demonstrated an AI-powered cyberweapon capable of breaching WeChat — the platform through which a billion Chinese citizens conduct the transactions of daily life. The demonstration exposed not merely a technical flaw, but a structural gap between the speed of offensive AI development and the slower, more deliberate work of building defenses and international norms. In doing so, it injected new urgency into the fragile diplomatic conversation between Washington and Beijing about what r