Let me just make a few comments.
It's my own personal feeling that we won't be able to successfully tackle the issue of climate change if we regard it simply as an environmental issue. There is no doubt that it's an environmental issue, but it's a matter of how it's framed. I think this is key to what was asked earlier about how we get other countries involved.
We have to frame it in ways in which we can build a certain mutuality, in which we can build a certain cohesion, a certain grouping of interests, so that we look at climate change in many ways: as a matter of technological competitiveness; in terms of health; in terms of development; in terms of energy security; and in many other ways.
If we look at it in those terms and frame it in those terms as well, we'll be able to get more people to the table. We'll be able to get this agreement among countries, for whatever reasons they want to look at the issue, to tackle the issue of climate change.