All governments from developing countries confront the challenge of designing coherent policies that can simultaneously accelerate growth, reduce poverty and inequality, preserve and improve the environment, and help adapt/mitigate to climate change. To successfully achieve these objectives, countries need both i) sound institutional arrangements for policy integration; and ii) quantitative analytical capacities to assess policy options. The ultimate aim is to foster a cohesive policy formulation process that incorporates development objectives across the economic, social, and environmental dimensions of sustainable development. In response to the Government requests from Cameroon, Ethiopia and Senegal, this project aims to support policy coherence through stronger inter-agency collaboration and coordination, while building integrated assessment methodologies and capacities to address the interlinkages and tradeoffs among policies, goals and the economic, social and environmental dimensions of sustainable development. A climate, land-use, energy and water systems integrated assessment (CLEWS), including socio-economic aspects, will be developed in each country within the framework of improved cooperation among institutions and public administration and integrated whole-of-government approaches. Capacity building activities will be provided to government officials, in order to address the challenges and particular policy scenarios discussed with official government counterparts, to inform evidence-based policy discussions. The Project will result in enhanced institutional capacity and inter-agency cooperation within target countries for developing integrated approaches and tools to support evidence-based policy-making to address the Sustainable Development Goals (SDGs).