After the latest China-US leaders' meeting, a new vision for the bilateral relationship has emerged. Zhao Hai, director of International Political Studies at the National Institute for Global Strategy, breaks down the three key words that now defining the relationship: constructive, strategic, and stable. Stability, he argues, is what both sides need, and it must serve as the overall guideline.  "If both sides stick to this definition," Zhao says, "we have reason to look at the relationship with a much more positive eye."