Although we are only into the first months of the Trump administration, many Koreans recognize that the U.S.-led, market-oriented, liberal international order has been severely shaken. In the background, the rapid rise of China and rather successful economic reforms under Xi Jinping have dramatically reduced its vulnerability and sensitivity to the United States. As one power’s grip is shaken and another’s is energized, two different orders are emerging in East Asia. We accordingly witness a “Clash of Titans,” the fallout from which could be fatal to the security and economy of the Republic of Korea.