"We are seeing a big shift in politics and in the economics and in the business sentiments around this. I'm quietly confident that we will get to where we need to get to, and as I put it, we've got every reason to be confident but not a second for complacency. "
But at the recent APEC meeting in Singapore, leaders agreed that finding a successor to Kyoto at Copenhagen would be highly unlikely.
It's been a long journey from Kyoto to Copenhagen, but where we ultimately end on this climate change issue remains a mystery.