美国总统奥巴马已经知道G-7无法独力管理全球经济，因此，在这次他领衔的峰会上，他让G-20成为协调全球经济政策的主要机构。
US President Barack Obama, having gotten the message that the G-7 could no longer oversee the global economy on its own, led a summit that made the G-20 the primary body for coordinating global economic policy.