An accusation that is being made post-Copenhagen is that the major developing countries, China in particular, blocked ambitious emission reduction targets that were offered by the advanced economies.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/deconstructing-climate-blame-game
[2] http://admin.indiaenvironmentportal.org.in/category/author/mario-dsouza
[3] http://admin.indiaenvironmentportal.org.in/category/author/tejal-kanitkar
[4] http://admin.indiaenvironmentportal.org.in/category/author/t-jayaraman
[5] http://admin.indiaenvironmentportal.org.in/category/journal/economic-and-political-weekly
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-agreements
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/emission-targets
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-mitigation
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-equity
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/developing-countries
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cop15-0