On 21st April 2015 we published a guest article at IISD in which we argue that for universal goals differentiated implementation approaches are needed at national or other levels, as any one governance style falls short, and that there is some convergence towards a more comprehensive approach which is called ‘metagovernance’. To support this insight, we propose the new principle of Common But Differentiated Governance (CBDG). A full Journal article was published as Open Access in ‘Sustainability’.