This case study, authored by Elise Schadler, tells the story of the REDD Options Assessment Report (OAR), a document developed through a facilitated process to best capture uncertainties around and recommendations for the policy concept of REDD (Reduced Emissions from Deforestation and Forest Degradation). The OAR and those involved with its development have been integral to the inclusion of REDD in the United Nations climate change negotiations. Based on detailed interviews and document analysis, the case reveals the intricacies of international climate change negotiations and the diversity of stakeholder groups and countries involved with moving them forward. Funded by the Meridian Institute, the Government of Norway and the David and Lucile Packard Foundation.