It is necessary to determine the role of various nations, including India, China and the other major developing countries in keeping the total atmospheric stock of greenhouse gases below 450 ppm (carbon dioxide equivalent) which, in turn, would provide a 50% probability of keeping the global temperature increase below 2°c. An analysis of future emissions of co2 in Annex I countries, large developing nations and other nations is done using a gams-based emission model. This analysis underlines sharply the historical responsibility of the developed nations for global warming and their duty to cut emissions drastically to mitigate climate change. Also large developing nations like China and India also need to contribute strongly to mitigation. It is argued that this necessity makes evident that carbon offsets will act as "double burden" on developing nations, as also a major disincentive to innovation in critical migration technologies in the industrialised world. The analysis implies that India needs an alternative climate policy that recognises proactive action for climate change mitigation while ensuring that the developed nations do not pass on their burden to the global South, which would otherwise seriously
