Book excerpt: The post-2015 goals and the changing environment of development cooperation will demand a renewed and strengthened UN development system. In line with their increasing significance as economic powers, a growing number of emerging nations will play an expanded role in the UN development system. These roles will take the form of growing financial contributions to individual organizations, greater weight in governance structures, higher staff representation, a stronger voice in development deliberations, and a greater overall influence on the UN development agenda. Emerging Powers and the UN explores in depth the relationship of these countries with, and their role in, the future UN development system. Formally, the relationship is through representation as member states (first UN) and UN staff (second UN). However, the importance of the non-public sector interests (third UN) of emerging economies is also growing, through private sponsorship and NGO activities in development. This book was originally published as a special issue of Third World Quarterly.