No global governance meeting of such magnitude, as is the case of the Conference of the Parties (COP), can be formally considered a failure in the political domain, at least by the participants. Even less if it is a significant event in the history of the COP like that of Copenhagen. It was billed as the largest climate summit, with the largest ever representation, 190 state parties – including 130 with the participation of their heads of state, and a record attendance with a total attendance close to 27 000. However, the Conference failed to generate consensus or produce the long-awaited political element to succeed the Kyoto Protocol. Contrary to what was expected, and only after many late informal-informal sessions, the end of the Summit was accompanied by a weak document without binding commitments: the Copenhagen Accord. Several elements of this experience, "far from being fully successful" in order to make progress in the world towards a solution to climate change, must be taken into consideration, while drawing a parallel with Paris 2015. The similarities are striking, the hope of millions of people is now focused on the post-2020 agreements, the results of the event which will take place in the French capital. And it is only by taking past experience as a lesson learned and directing the negotiations towards a new framework that is effective, while being inclusive and capable of taking into account certain individual compromises with a view to a global solution, that failure will not happen again. history in France. For this response, I will discuss elements within the framework of the UNFCCC – COP, understanding that the status quo of climate change negotiations will not be significantly different over the next year and a half. Solving the challenge will definitely also require...... middle of paper ......ity, limits have been proposed, but in terms of intensity targets (in an emissions/GDP basis), and not on total emissions. A significant effort Measures must be put in place to transform this vision into one that encourages each country to act. A progressive proposal, similar to the model implemented in the Montreal Protocol, in which countries should not all commit to identical emissions reductions or bear an equal economic burden, in initial terms, due to significant differences in socio-economic development between countries, could have an influence in solving this problem. A proposed action to combat climate change requires not only an improved global framework, but perhaps also rethinking the broader global issue. Does the UNFCCC framework proposed in the early 1990s, in a different global dynamic, work? Or is a new global governance structure needed ?.