CCS Deployment in the Context of Regional Developments in Meeting Long-Term Climate Change Objectives This study aims to characterise key countries and regions worldwide where CCS could play an important part of mitigation efforts, based on national circumstances and priorities. Given the need to reach an international climate agreement at the 21st Conference of the Parties (COP21) in December this year in Paris, the study provides a basis for understanding the relevance of CCS within this process.