2 April 2009 may yet be marked as the day on which, through the catalysis of a global economic crisis, China definitively emerged as a 21st-century world power. Just a few months ago, the talk in western capitals was still about graciously inviting China to join the western club of G7 plus Russia. Now G20 is widely accepted as the new top table of world politics, and China is already seen as one of the biggest players at that table. The question now is: what kind of world power will China be?