Copenhagen: U.N. Chief Looks to Obama to Lead on Global Warming

"President Obama's commitment to dealing with global warming has changed the political dynamic for our negotiations," United Nations Secretary General Ban Ki-Moon told ABC News here at the Copenhagen Climate Summit. "Everybody is looking to the U.S. for leadership and commitment in dealing with global warming," he said. "It has helped that he has repeated his commitment many times." President Obama is expected to speak at the final plenary session of the conference after he arrives here early...Full Story