When your so-called friends ignore your sovereignty and we are so small population-wise what choices do we have for defence? I know the US wouldn't stand for it if the situation was reversed.
Good luck with search and rescue too we have a tough time now finding ships and planes we know about let alone some unknown ship who knows where. The recent Coast Guard helicopter crash is a good example the ship that the helicopter came from knew where they were but still couldn't get to them before they occupants froze to death. http://www.theglobeandmail.com/news/national/three-die-in-ca...
Prime Minister Harper is putting a push on lately to visit the north but it's more PR than anything but his party has spoken about building massive Coast Guard ships to patrol the arctic in the winter. I think they had giant tracked wheels on the front to help break ice; the bows of ice breaking ships ride up onto the ice they don't push through the ice.