Developed country Parties should take the lead in combating climate change and the adverse effects thereof; All Parties should contribute to the global effort to combat climate change, in accordance with their common but differentiated responsibilities and respective capabilities - a spectrum of effort is envisaged; All Parties should aim to undertake a similar level of effort to others at a similar level of development and with similar national circumstances Those Parties whose national circumstances reflect greater responsibility or capability should make a greater contribution to the global effort.
[Mediante una combinación de los esfuerzos de reducción de las emisiones en el ámbito nacional y los mecanismos [flexibles] [del mercado del carbono. ] [Un máximo del [X]% de sus compromisos debería cumplirse mediante el uso de mecanismos [flexibles] [del mercado del carbono], incluidas las reducciones compensatorias]. ]