Industrialized Nations Unveil Plans to Rein in Emissions

With less than three weeks remaining before negotiators gather in Copenhagen to hammer out a global response to climate change, a rapid-fire succession of countries are unveiling national plans that serve as opening bids for reining in heat-trapping emissions.

But, speaking at the United Nations headquarters on Thursday, he seized on the latest pledges to take aim at the United States, which has not yet played its hand.