There is often much concern about Arctic security these days. Russia is investing in bases and equipment, and Canada lacks both. So, the concern is that Canada would not be able to defend its arctic possessions. Despite lacking in arctic knowledge, I feel pretty confident in my comeback: who is going to take what and how? Russia, of course, Russia. Oy.
The Arctic is a hard place to operate because it is cold and it is very, very far away. This is not just true for Canada but for everyone else and especially Russia. That is, to poach Canadian territory means operating on a regular basis in the high, high north. It is very, very expensive and for what? Resources? Seems like the reality is that the resources to get there and stay there will continue to challenge those who want to dig up the stuff.
So, as I have been fond lately of quoting Napoleon: do not interrupt your adversary when he is making a mistake. Russia is, indeed, an adversary, and spending heaps of money on arctic capabilities is a mistake.
The other countries--US, Norway, Denmark--aren't adversaries. So, chillax.