Normally, diplomats are, well, diplomatic. Not so on Thursday in Anchorage, where high-level US and Chinese officials gathered for the first time since Joe Biden became president. In the public setting of a photo op, Secretary of State Antony Blinken and Chinese Foreign minister Wang Yi tossed verbal barbs at each other. Marco Werman untangles the exchange and what it means for US-China relations with Susan Thornton, a retired career diplomat focused on China and East Asian affairs, who is now a senior fellow at Yale Law School’s Paul Tsai China Center.