President Obama reportedly was re luctant to attend the final day of the UN's Copenhagen climate-change summit unless it was front-end wired to be a major political success. But he went anyway, was twice humiliated in public by the Chinese premier and then finally settled for what the White House hailed as a "meaningful agreement." Really? A top aide admitted that the deal was basically just "an important first step" that was "not sufficient to combat the threat of climate change." Then Obama himself dropped the other shoe: The agreement contains no specific commitments on carbon emissions, only pledges that...