I'd agree with Andrea.
Also, if you look at the U.S. comments, as Dr. Charron mentioned, NORTHCOM is the major advocate for the Arctic in the U.S. unified command organization. However, looking at statements, for example, by former U.S. chief of naval operations, it's not that much of a priority as compared to the Asia-Pacific area, and now with the Euro-Atlantic area coming up as a priority.
The United States is currently chairing the Arctic Council, and I think its objectives are in fact to encourage diplomacy in the area. The Russian buildup in and of itself doesn't call for a Canadian or U.S. buildup in the region. I think in the first instance, the United States and Canada, and its NATO allies, will look to diplomacy, but maintaining surveillance in the area is important for both countries.