The friendship between the countries has “no borders”, they declared. Given that the leaders met just weeks before the invasion, it would be understandable to conclude that China should have known more about the Kremlin’s plans. But mounting evidence suggests that the echo chamber of China’s foreign policy establishment may have misled not only the country’s netizens but its own officials as well. My colleague Edward Wong reported that over a three-month period, senior US officials held meetings with their Chinese counterparts and exchanged information detailing that of Russia troop buildup around Ukraine. The Americans urged Chinese officials to intervene...