China does not hold the bulk of our debt.That would be an interesting scenario. The US Debt will become unsustainable. When foreign investors dump their US Debt investments it will create a "run on the bank". China will be the 800# Gorilla leading the run. Doubtful Ukraine will be considering anyone but themselves, as always. Doubtful crypto will have solved all of it's security risk before the run on the bank. The Gold Standard will return.