CIGI has been building a network of former and serving officials from foreign ministries, central banks, finance departments and international organizations, and with researchers at prestigious think tanks and universities from around the world. The defining objective of the network of individuals, working in independent institutions, is the cooperative development of innovative proposals for global governance to support the policy development work of the G20. The CIGI conference “An Unfinished House: Filling the Gaps in International Governance” is the initial stage in this CIGI-led G20 think tank network’s cooperative effort. The background paper for the conference provides a useful collection of facts and observations about the universe of global governance arrangements. It offers a preliminary description of the critical gaps and inadequacies — to assist in thinking about the principal dilemmas and research priorities.