Abstract
New Cold War has begun. Chinese President Xi Jinping declared to build world-class military at the 19th National Congress of the Communist Party of China on October 2017. Xi emphasized the New Era for China at the Defense White Paper on July 2019. On the other hand, the United States preserved the Peace Through Strength at the National Security Strategy on December 2017. This paper clarifies how the U.S. and Chinese described operational concept in the era of New Cold War.