NUSA DUA, Indonesia - Former U.S. vice-president Al Gore blamed the Bush administration as the main obstacle to progress in international efforts to fight global warming, but he urged delegates at the United Nations to work around his country in the hope that a new government would be more willing to cooperate. "I am not an official of the United States and I am not bound by the diplomatic niceties," Gore said in an hour-long speech on Thursday evening. "So I am going to speak an inconvenient truth. My own country, the United States, is principally responsible for obstructing progress...