We've certainly planned for single allies going unhinged - but what we didn't plan for was us going unhinged and causing all our allies to take retaliatory actions. If France, Denmark, Germany, Britain - any one of them was swept up in nationalistic fervor and turned their back on our multi-lateral alliances we could easily weather that storm... when it's us though, that threatens the USD's acceptance as the defacto trading currency especially at a time when BRICS is semi-coherent and we're weathering a recent inflationary burst. This is like a perfect storm.

Definitely, I think there'd be a crisis if our biggest holders like the UK and Japan sold off their treasury securities but some "small" selloffs aren't outside the realm of possibilities. Trillions in selloffs though, that might get interesting.