Yes, I can start off on that.
The major impact in terms of North American security is obviously in the north. This actually ties in nicely with the previous question. As polar ice melts and northern routes become more viable economically, we are seeing a large number of countries, particularly some Asian countries, with a great deal of interest in figuring out what their economic stakes might be within the north. China, South Korea, the Japanese, and others are becoming more interested in things like the Arctic Council. Again, it's not a threat, but something from a sovereignty perspective that has to be monitored.
In the Arctic context, the routes that will open first, however, are actually the ones within Russian waters. I think that's why we're seeing a lot of their investment in their own infrastructure along those routes, so that they can exert effective control over their own sovereign interests. There are certainly a number of things from a climate change perspective that are affecting Canadian interests, but that's the primary one that we're watching.