The U.N. climate chief has a message for naysayers about the Copenhagen climate conference next month: It will succeed, according to AP. Yvo de Boer assured reporters Thursday the long-anticipated meeting Dec. 7-19 isn"t a failure even before it"s started. He vowed Copenhagen «will be the turning point» when words turn to action globally _ and a fuller treaty can be worked out by six months after the meeting. But he acknowledged that prospects for a binding global climate pact among 192 nations remain elusive just 17 days before the start of climate talks. De Boer praised recent goals set by Brazil and South Korea to cut greenhouse gases, and called on the United States to announce similar specific targets.