When the modern international financial system was created during World War II, it was designed largely, but not exclusively, by a few advanced and industrialized economies. Developing countries participated in and contributed marginally to the proceedings. Subsequently, especially in the 1960s, the dominant rich countries decided that running the system and shaping its evolution should be their responsibility alone. It then fell to the developing countries to try to regain a voice and to claw back a measure of influence. It has not been easy, and the successes have been few and mostly around the edges. This paper examines that process by which the developing countries have come together as a group to try to influence the evolution of the financial system.