This paper synthesizes findings from six case studies that have experienced instances of decarbonization over the past decade: Ecuador, Iraq, Nigeria, South Sudan, Sudan, and Venezuela, and two thematic papers – on peace-making during oil shocks, and a broad review of the existing literature on energy transition in fragile states. This allows for examination of what has already happened in contexts which have gone through decarbonization, which yields insights into what might happen in other rent-dependent political systems during energy transitions.