China has officially sanctioned 20 U.S. defense companies and 10 individuals in a massive retaliation for the record-breaking $11.1 billion Taiwan arms sale. With assets frozen and business bans in place, is this the start of a total economic decoupling? In this news explainer, we look at China’s aggressive move against major American firms, including Boeing’s St. Louis defense unit. These sanctions follow Washington’s announcement of its largest-ever weapons package for Taiwan—a massive deal in