Montreal Gazette: A sense of pessimism and pending defeat has created a scramble to get world leaders to Copenhagen next month for the final negotiations on climate change – but Canada’s negotiator says it’s already too late. “We are clearly a long way from a treaty,” Michael Martin, Canada’s climate change ambassador and chief negotiator, said in an interview as the Barcelona talks drew to a close yesterday. Martin said the best that can be expected now is a political agreement to spend 2010 …