I'll just speak to what I know, and that is that first of all there's significant inter-annual variability still forecast despite the declining summer sea ice extent. In addition, the very treacherous and dangerous multi-year ice extent to the north of the archipelago has become much more fractured and, therefore, able to move into places such as the Northwest Passage. Less ice means more hazards. It's very non-linear.
I don't know how this is going to impact sovereignty. I do know that people are going to rely more and more upon services provided by the Government of Canada in the safe navigation of these routes.