In the late evening on December 18th, 2009, all eyes were on Copenhagen waiting to see if the Conference of the Parties 15 (COP15) of the United Nations Framework Convention on Climate Change (UNFCCC) would produce a global climate treaty that would require the nations of the world to reduce their output of greenhouse gas (GHG) emissions.

Although legally-binding emissions reduction targets were not included in the Accord, most nations have proposed unofficial emissions reduction commitments which they claim they will implement through domestic policy.

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