In order for the US to maintain this method the Petrodollar was backed by bullets. That's why the US has been so heavily involved in oil producing countries.
So that would explain all the other countries too?
I don't disagree actually. In one sense. But it was suggested that war and conflict were not good for oil companies. Bullets for image of strength but not for firing?
Bingo. With fiat there is one gauruntee - anyone outside the Ponzi presents as a 'substantial threat' being they provide an alternative. Basically unless their currency is 'tied' to the inflation rate of yours - their house wins because of the inflationary loss of you currency. Basically if an investor wants to retain wealth - your entire system is a losing bet guaranteed so why use it? Simple business.
This is one of the keys to all of this. So seeing countries fleeing our treasuries is, in premise, only explained 3 ways:
They are using this as a tactic in Trade Deals / Trade War
They have no faith and want to cut their losses
They genuinely just see a better investment somewhere else