If we weren't part of NATO, technically the US wouldn't be able to engage an attacking entity......it'd be the same as what's going on in the Ukraine right now. Geography isn't the deciding factor.U.S would guard us regardless if we were nato or not simply to the fact if Russia is going to attack it will be through the North Pole first. Nuclear or aircraft wise. Sorry didn’t mean to reply to you fall.
And they could fly right over BC or come through the high arctic.
There are a couple things that have saved Canada so far, one is our membership in NATO and there is how vast our land mass and how spartanly populated we are. If someone wanted to invade us, they'd need a very, very well set up logistics net to do it.
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