Simply because The Smew is giving its American counterpart a run for its money:

Flush With Oil From Alberta, Canada Prepares For Inevitable U.S. Invasion

OTTAWA, ON—It’s a subject the Canadian military high command doesn’t like to discuss, but one that’s taken on an increasing sense of urgency since the discovery of massive oil reserves in the Alberta tar sands: how to defend Canada from imminent U.S. invasion.

A highly-placed military source in the Harper government, speaking off the record, confirmed that Canada is actively preparing for an American attack. “Look, we can all see the pattern here: if a country has significant oil reserves, the United States will find a pretext to invade. Iraq, Libya—frankly, it’s either us or Iran next,” he said.

Brilliant!