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The Protocol ends in 2012, where the new Accord is designed to take over, but whether this will affect any change remains to be seen, as Kyoto was a failure with the biggest source of global warming being the United States and this same country refused to be part of the Protocol:
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Hopefully now with Obama @ the helm and this time US is a part of the new Accord, come 2012 when the Protocol expires, the new Accord with US involved will make our world for the better.