What are the concerns and priorities behind the new language used to define China-US ties?

When China and the United States agreed in May to frame their relationship as a “constructive relationship of strategic stability”, the phrase left many observers trying to guess what it actually meant. Four months on, they have added an elaboration that offers further insight into the two sides’ respective priorities. After presidents Xi Jinping and Donald Trump met in Washington last month, the two sides pledged to build a “constructive relationship of strategic stability on the basis of...