Reuters: Former U.S. Vice President Al Gore drew cheers at 190-nation talks by saying the United States was the main block to launching negotiations in Bali on a new global climate treaty. Efforts to start two-year negotiations on a pact to succeed the Kyoto Protocol flagged on Thursday, the penultimate day of the December 3-14 talks, after the European Union accused the United States of lacking ambition. “I am going to speak an inconvenient truth,” Gore told an audience of …