[en] The authors propose innovating options enabling political, technological and financial cooperation, for a better negotiation on climate. They identify nine issues: defining a constraining legal and institutional framework which will preserve Kyoto's assets, defining a long term objective (by 2050), implementing credible actions and realistic national commitments, strengthening of carbon markets, defining precisely the role of credit systems, establishing a specific agreement on avoided deforestation, paying particular attention to adaptation, developing means of coordination on technologies, and implementing sector agreements