It would be defeatist to say, "Let's give up on this." I am not saying that the hon. Gentleman is suggesting that we give up now, but the lesson of the past year is not that the problem is insoluble. The world has come a long distance. In a way, part of the optics of Copenhagen and some of the things that we failed to get mean that it was a disappointment, but to interpret the past year as suggesting that we are not going to tackle the problem is defeatist. The past 12 months have proved that progress can be made and that further progress can be made in the years ahead.
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