“SRM, however, currently does not exist as full-fledged technologies and deployment strategies, but as immature and unscaled research activities. As SRM emerges into a complex landscape of issues, actors, and agendas in global politics, it will pose challenges at every stage, from conceptualisation, to research and development, to deployment. Most of these challenges – ranging from SRM’s potential to reduce mitigation efforts, to impacts upon state and human security – have entwined societal, technical and envi- ronmental dimensions and could consist of sequences of events that cannot be concretely predicted.”