To address climate change, we agreed that all nations aligned with the Copenhagen accord must meet their responsibilities.

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Despite his best efforts to forge a consensus between developed and developing countries, the resulting Copenhagen Accord was weak and ineffectual.

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They may be surprised, then, to learn that the bulk of the commitments to reduced emissions in the Copenhagen accord come from developing countries.

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It had insisted on stripping all figures, even ones that did not apply to China, out of the text that finally became the Copenhagen accord.

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Anyone who says differently does not understand our explicit international commitments under the Copenhagen Accord, the Cancun Agreements - or, alternatively, is bad at maths.

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Take the Copenhagen Accord, for instance, which stipulates that developed countries should raise funds to help developing countries cut carbon emissions produced by coal-powered factories.

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The Copenhagen Accord is based on a proposal tabled on Friday by a US-led group of five nations - including China, India, Brazil and South Africa.

BBC: Copenhagen climate deal meets qualified UN welcome

They argue that, without cuts in emissions far more drastic than those volunteered in the Copenhagen accord, there is only the slimmest chance that serious climate change will be averted.

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"The conference decides to take note of the Copenhagen Accord of December 18, 2009, " the chairman of the plenary session of the UN Framework Convention on Climate Change (UNFCCC) declared earlier in the day, swiftly banging down his gavel.

BBC: Copenhagen climate deal meets qualified UN welcome