I think Canada has to decide whether Kyoto is legally binding. I don't know what the decision on that is. Recalibration is not an option if it's legally binding. The Kyoto Protocol doesn't say hit this target when you can; it says hit this target by this timetable. The penalty in the protocol for not hitting the target is 30%. If you did the straight economics and said it's legally binding and you have to do it, you would not elect to take the penalty. That's a 9% per annum compounded interest charge.
On December 5th, 2006. See this statement in context.