 By the end of Yuan Shikai's reign and the subsequent Warlord Era, China's international prestige had declined to "almost nothing".In World War II, China's effective role was sometimes questioned by other Allied leaders.The 1950–1953 Korean War greatly exacerbated China's international position by fixing the United States in a position of animosity, ensuring that Taiwan would remain outside of PRC control and that the PRC would remain outside of the United Nations for the foreseeable future.