Pivotal informal organizations, above all the G20, the G7 and the BRICS, have accumulated growing power in recent years. At a basic level, informal organizations differ from the formal institutions such as the UN and the IMF in a number of key ways: membership structure; foundational or legitimizational character and level of bureaucracy. What are the implications of this phenomenon for global governance? What does this shift from a hub club to a focal point network imply for innovation in modes of cooperation? The author has participated in numerous such summits, in his capacity as Prime Minister of Italy and President of the European Commission, and shares his first�?hand thoughts.

中文翻译：

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从八国集团到二十国集团的全球治理和全球峰会：历史，机遇与挑战

重要的非正式组织，尤其是二十国集团，七国集团和金砖国家，近年来积累了越来越大的力量。在基本层面上，非正式组织在许多关键方面与联合国和IMF等正式机构有所不同：成员结构；官僚机构的基本或合法化特征和水平。这种现象对全球治理有何影响？从枢纽俱乐部向联络人网络转变意味着什么意味着合作方式的创新？作者以意大利总理和欧洲委员会主席的身份参加了多次此类峰会，并分享了他的第一手想法。