Perhaps I'll start from the civilian perspective.
As was said earlier, there's a good argument to be made, in my view, that sovereignty is not under threat in the Canadian Arctic. The commercial shipping perspective on sovereignty might be something like this. Sovereignty is not so much about excluding somebody or preventing somebody from entering your maritime space. It's ensuring that whoever enters your maritime space does so on your terms, perhaps in compliance with international law as well, because we are a defender of the international rules-based order.
The framework that Ms. May and I were discussing a few moments ago—those are our terms. That is how you come into Canadian waters in the Arctic. In terms of our co-operation, which we have with the Chinese through the North Pacific Coast Guard Forum and with the Russian coast guard through the Arctic Coast Guard Forum and the North Pacific Coast Guard Forum, from where we sit, our rules, our terms, are not a matter of debate, and they're not being raised as a matter of debate.
From a maritime commercial perspective, a civilian perspective, sovereignty is not under threat. I personally would fall into the camp of folks similar to what I think Major-General Seymour was describing. The need for Russian icebreakers and Russian assets is driven by many other factors. To see those assets as being lined up as a threat to Canadian sovereignty in any way—we see no evidence of that, from where we sit.