Targeting ambitious changes in agricultural practices that would preserve restore and enhance soil carbon and soil health requires an increased coordination of international research cooperation. The specific challenge lies in the identification, implementation and verification of agricultural soil management practices which create a positive soil/ecosystem carbon budget at the farm and landscape levels, sequester carbon, improve soil structure and soil quality and provide climate change adaptation while contributing to sustainable development. In this context, the CSA CIRCASA has an overarching goal to develop synergies on research in this field at European Union and global level, targeting four realistic and highly complementary objectives: O1. Strengthen the international research community on agricultural soil carbon sequestration; O2. Provide an improved understanding of agricultural soil carbon sequestration and its potential for climate change mitigation and adaptation and for demands of increased food production; O3. Synthesizing stakeholder’s views and knowledge needs on agricultural soil carbon sequestration and climate change O4. Favor a more structured approach, by preparing an International Research Consortium (IRC) These four objectives will produce measurable outputs during the time frame of the project and create significant outcomes for the implementation of the UN Sustainable Development Goals (SDGs) and of the Paris agreement (COP21, 4 per 1000 voluntary initiative) of the UN Framework Convention on Climate Change (UNFCCC). CIRCASA will benefit from the participation of three major initiatives: the Global Research Alliance on agricultural greenhouse gases (GRA), the Joint Programming Initiative on Sustainable Agriculture, Food Security and Climate Change (FACCE JPI) and the 4 per 1000 - Soils for Food Security and Climate - initiative, and from the contribution of the CCCAFS and the WLE programs of the CGIAR.