Revision with unchanged content. UN peace operations represent intermediate international public goods that yield a number of positive externalities – such as peace and security, enhanced international stability and respect for human rights. The potential benefits that can be derived from these operations critically depend on how the international community decides to finance them. Despite the fact that the financing of UN peace operations is a crucial component of their production path, there have been surprisingly few attempts to examine whether and how the UN has adjusted the international public financing system underlying the provision of its operations to the complex tasks the organization is required to undertake. This book provides an analysis of the several existing international financing mechanisms and tools created by the UN to help foster better allocation to its operations. It summarizes important UN internal reform processes related to their use and offers policy recommendations for a more integrated and innovative financing approach to UN peace operations as international public goods. The book makes a major contribution to our understanding of the financial aspect of international cooperation. It is intended for a wide audience drawn from political science and economics.