well the Russians have always tried to open up the NE Passage - and it looks as if it'll be easier in the future - with global warming a lot of Russia will be a less hostile climatic region
The usual legal rules will apply to boundaries - so expect a lot of yelling and screaming from everyone who has skin in the game - - Russia, Norway, Denmark/greenland, Canada & the USA
Even more "9-dash lines" I expect.............