2. We're talking about the US, the last country on the planet to have to worry about wars. First because it's blessed by geography and separated by two oceans from anything relevant. The US has fought many wars. None of them on their soil since the war with Canada 200 years ago. Second because it is always the aggressor, not the victim. Always. Third, it's the last country on the planet that has to worry about feeding its citizens or having the capabilities to fight a war. Be real and serious. Either in conventional or non conventional wars the US can destroy everything on this planet multiple times over. Drop all of that insecurity.
3. Even more the trade surplus of countries like Germany, Italy. China or Japan isn't good. These countries are working their assess to send stuff abroad, and getting pieces of paper in exchange. Those pieces of paper won't magically materialize tanks, trucks, drones, ships and food in case of a sudden need.