For the 13th meeting of the Commission on Sustainable Development (CSD-13), the Swedish International Development Cooperation Agency (Sida) commissioned the Stockholm International Water Institute (SIWI) to produce “Let it Reign: The New Water Paradigm for Global Food Security”. The report presents recommendations for policy and decision makers with regard to sustainable food production, sustainable food consumption and ecological sustainability. The topic addressed in this report is an issue identified as being of very high priority for Sida. The views put forward in this report, on the other hand, are expressed solely on behalf of the authors. Collaborating partners for the report have been the International Food Policy Research Institute (IFPRI), IUCN – The World Conservation Union and International Water Management Institute (IWMI).