Nations aren't stupid, they know a global reset is coming and the current system will collapse. It's just pretty paper after all is said and done. But anything can replace money if you call it the barter system.
Labor, livestock, ammo, trees, etc... maybe it's oil, gas, gold, and silver. Each nation will have to figure it out to keep the food supply and essentials up and running. The danger is if you live in a big city and the trucks stop running due to highjackings and people go hungry. Population reduction will be swift. The drug of choice will be food and water once again. That should solve the problems with our liberal big cities. Being an American and still the world's number one economy, we should be better off than most.