 Well, as I mentioned earlier, it's really the role of the co-chairs to help facilitate the discussions among the parties. I think our sense, as Ahmed was saying, is that there is a strong will among all of the parties this year to reach an agreement in Paris. I think that will is quite different from the situation that we faced in the run-up to Copenhagen in 2009. And my sense is that if there are any spoilers in this process, if there are those who don't want to have an agreement, I think their job is going to be very difficult because I think there are too many parties, North, South, East, West, and so forth, all of whom want an agreement. I don't think our job will be to try to enforce something. I think the other parties will exert the pressure on them.