This Section presents an introduction to International Waters and the TDA/SAP process. It describes what International Waters are and why are they important, and why the GEF is interested in them. It then outlines the TDA/SAP process as a tool for IW management, presents a brief history of the TDA/SAP process, gives examples of TDA/SAP processes in action and finally describes the current GEF approved version of the TDA/SAP process.