On the first page, I see 9 countries which it claims have a default risk of 50% or higher in the next 5 years. Which means a probability of at least 1-0.5^9=0.998 that at least one of them will default.
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?
> The CFR Sovereign Risk Tracker can be used to gauge the vulnerability of emerging markets to default on external debt.
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.