Bloomberg: Government negotiators are already writing off chances for a global treaty to fight climate change, nine months before the annual talks begin in Cancun, Mexico. Kunihiko Shimada, principal international negotiator at the Japanese Ministry of the Environment, said yesterday a deal this year is "almost impossible." Jos Delbeke, who spearheads European Union climate policy at the European Commission, ruled out a "comprehensive legal agreement" in 2010. Their remarks call into …