The last best chance: UN climate conference opens   Diane Sawyer says this is her last week on 'GMA'   U.S. wants allies' new troops in Afghanistan by mid-2010   Paris Tour d'Argent auctions wine from famed cellar   REFILE: Depression, peers top influences on youth violence   Keidanren to propose growth strategies for environment, other areas+   Okada tells Cuba to address debt problem before trade expansion+   Dubai World looks to sell assets in quest for cash   2ND LD: Ex-actor Oshio arrested for giving drugs to woman who died+   Blast outside Iraqi elementary school kills 8   10 million sign petition for climate action   Russia club fire toll reaches 113 as burials begin   Kyodo economic news summary -6-+   Japan ruling coalition remains divided on size of fresh stimulus+   Ex-Soviet head Gorbachev advises Hatoyama to endure criticism+   Greek youths riot in Athens for 2nd day   Romania opposition party contests election results   The best last chance: UN climate conference opens   LEAD: Explosion in northwestern Pakistan kills at least 11+   Romania opposition party contests election results