I can speak to China's polar silk road. As I understand it, and as they have articulated it, that route is actually closer to Russia's northern sea route than any Canadian territorial waters.
A lot of comment has been made about a nascent or ongoing strategic partnership between Russia and China. This is one area where there is friction. I think it is evident, and it has been widely reported. The Russians have a great deal of concern about this Chinese polar silk road concept because it comes so close to Russian territory. There is concern around Chinese predatory tactics surrounding precious commodities and so forth in that region.