Interesting that there are no current transpacific cables at all landing in western Canada. Makes the area very dependent on the neighbour to the south (which is an earthquake risk, as well as a political risk).
Ehh, I imagine if things get too bad they can always lay a new one. In the meantime Western Canada could probably be connected to Eastern Canada somehow. Given that people were laying tons of cables 120 years ago, it can't be _that_ difficult for a country as big as Canada in crisis.
http://www.allstream.com/about-us/ipnetwork/
Those will connect with arctic and atlantic undersea cables, so Canada wouldn't be completely cut off.