FILE - In this file photo released by China's Xinhua News Agency, spectators wave Chinese and North Korean flags as North Korean leader Kim Jong Un, left, and visiting Chinese President Xi Jinping attend a mass gymnastic performance at the May Day Stadium in Pyongyang, North Korea Thursday, June 20, 2019. China appears to be keeping its distance as Russia and North Korea move closer to each other with a new defense pact that could tilt the balance of power between the three authoritarian states. (Yan Yan/Xinhua via AP, File)