It is no secret that we spend a ridiculous amount of money on our military. We spent around $800 billion this year, more than the next 11 countries combined. If we had instead spent the same as the next biggest spender, which is China at $250 billion, then not only would the debt have grown at $550 billion less a year, we would actually have turned a surplus during the last years of the Obama presidency. But despite all this, Senators are still trying to get secure another $50 billion for the military in the current spending bills going through Congress.

No country or government is going to come out and say "The US dollar is trash!", because their currency is unlikely to be faring much better right now. Instead what will happen is that there will be less foreign investment and fewer foreign business buying, holding, and using USD. No amount of military presence will change that.

Well, the obvious huge difference is that the government can't create or borrow money which didn't exist a second ago in order to continue to pay off its debts and keep functioning. When it runs out of money, then it runs out of money. It could be a great lesson in fiscal responsibility, but more likely what would happen is that they would come up with some new fractional reserve system between various governments and central banks which would allow them to spend 100 BTC for everyone 1 they actually hold.