What is the theme of the summit?

This week, leaders of the top industrial and developing economies gathered in the eastern United States. They met in Pittsburgh, Pennsylvania, for a summit on the world’s financial future. Leaders of the Group of Twenty have now met three times in less than a year to deal with the worst recession since the nineteen thirties. Many of their governments have used spending programs to inject five trillion dollars into their economies. These stimulus efforts have had some success. Now, the question is how and when to withdraw that support without harming a recovery, and how to avoid a repeat of the financial crisis.