Beijing was the chief beneficiary of the North Korean missile launches earlier this month, according to Edward Timperlake, a specialist on China’s military. “The PRC played the United States and our allies brilliantly,” Timperlake said. “The NK missile launches were a windfall of intelligence for the PLA.” China was able to monitor U.S. communications and missile defense system sensor activities, as well as the rules of engagement for using a missile interceptor against a North Korean long-range missile. China has concluded that the United States has been “awakened” strategically to the growing danger from China and that the shift in...