As I mentioned in my statement, the concept we're working with in the negotiations is comparability of efforts. So there's a discussion on how one defines comparability of efforts.
We believe that an important consideration is economic cost. There is a wide range of information that helps countries assess how implementing and achieving certain goals will impose certain costs. Those costs can be measured in different ways. It is on the basis of those assessments of cost that I believe those targets are comparable to those of others.
In terms of level of ambition and, again, based on the nature of our economy and our history, these do represent ambitious targets. But I recognize that ambition is a judgment and that there will be different views on what constitutes “ambitious” or not.