I would come back quickly to the topic I was discussing earlier, which is that when we're looking at solutions for climate change we also have to look at the international rules that govern what we do. If we're talking about international leadership, there are other areas we can also get engaged in internationally. I think we have to a certain extent, like in reducing HFCs under the Montreal protocol, like working with the people who are doing short-lived climate pollutants. I think people have estimated there's half a degree to be saved if we could get some sort of agreement there that would work.
I think we have to look broadly at the kinds of things we could do that are consistent with the kinds of approaches we take as Canada.