Sort of definitionally, nothing in that list is going to be more politically stable than the US.
In the second link, the author gives slightly lower country risk premiums (0% vs 0.2%) to Australia, Canada, Denmark, Germany, Liechtenstein, Luxembourg, Netherlands, New Zealand, Norway, Singapore, Sweden, and Switzerland. Setting aside the practicality of these recommendations (how much debt does Liechtenstein issue? or Germany, for that matter?): in a world where the US is unstable, it's hard to imagine Canada being risk-free.
Canada needs to pursue further armament (Carney is pursuing a doubling of its defense budget) and training in asymmetrical warfare.
There's a reason proper countries have had 5+ constitutions and keep changing them.
How does it feel to bury your head in the sand so hard that you can't see what's happening around you?
They (we) are all under attack.
That's a crazily high confidence prediction. What is their track record? What did they predict 5 years ago and how did those predictions bear out?
Edit: whoops, CFR only gives Russia a 9/10 score, not the full 10/10 score of 50% default probability.