The relationship between the US and China is likely to determine humanity’s fate in the 21st century. It will determine whether there will be peace, prosperity and protection of the planetary environment, or the opposites. Should it be the latter, future historians (if any such actually exist) will surely marvel at the inability of the human species to protect itself against its own stupidity. Yet today, happily, we can still act to prevent disaster. That is true in many domains. Among these is economics. How then are economic relations to be best managed in the increasingly difficult future we confront?