The West's power is fading, and emerging economies are gaining ground. In the near future, the world will have numerous centers of power, founded on alternative models. This change can take place in an orderly and peaceful way if the West recuperates its leadership role, and to do so, it will have to relaunch its economy and its democratic institutions. The twenty-first century will not belong to the United States, Europe or China. It will be no one's world.