Evaluation has become a key tool in assessing the performance of international organizations, in fostering learning, and in demonstrating accountability. Within the United Nations UN system, thousands of evaluators and consultants produce hundreds of evaluation reports worth millions of dollars every year. But does evaluation really deliver on its promise of objective evidence and functional use pBy unravelling the internal machinery of evaluation systems in international organizations, this book challenges the conventional understanding of evaluation as a value-free activity. Vytautas Jankauskas and Steffen Eckhard show how a seemingly neutral technocratic tool can serve as an instrument for power in global governance they demonstrate and explain how deeply politics are entrenched in the interests of evaluation stakeholders, in the control and design of IO evaluation systems, and to a lesser extent also in the content of evaluation reports. The analysis draws on 120 research interview