Halting climate change is an enormous coordination task for international governance where the major state powers play a major role, including the risk of defection. The 2015 Paris enactment of the COP21 Treaty with its three objectives is considered as the chief response to the set of challenges that global warming presents to mankind in this century. Will the COP21 framewotk suffice? Let us ask: What more exactly is involved the implementation of the GOAL II, i.e. the reduction of CO2s up to 2030?