Thought many of you would find this interesting.fiercehomelandsecurity.com looks at projected mid 21st century shipping routes through the Arctic.

Generally traffic between Europe and Asia would use the routes closer to Russia, while traffic from North America would use the NorthWest Passage closer to Canada and the US.

In either case, all traffic will have to pass very close to Alaska as the traffic moves through the 45 mile wide Bering Strait and past the Diomedes and St. Lawrence Island.