I'd like to jump in at the end with one comment on the Arctic.
As to my comment about flattering first, I remember a meeting of the Arctic Council a couple of years ago, where the Canadian minister present told the Chinese that he warmly welcomed their interest and presence in the Arctic. We didn't need to say that. It wouldn't be rude, necessarily, to sit on our hands and think. To welcome China sends a message of Canadian intent that is, I think, different from one that's in our interests.