America is more than ready, considering how much we spend on the military. This article is a few years old, and definitely sensationalist, but is still an interesting read-

https://www.wearethemighty.com/mighty-trending/how-long-the-us-military-would-last-against-the-rest-of-the-world/

And on top of that, the US Army just started deploying robotic troop carriers, and is finishing up remote combat vehicles for the front lines so that first contact isn't with soldiers. Yes, we're going to have killer robots on the front line. And soon.

[–] yogthos@lemmy.ml -1 points 1 year ago* (last edited 1 year ago)

US also spends a lot on healthcare, just because you spend a lot of money on something doesn't mean you produce good results. Not to mention that cost of production in US is an order of magnitude higher than in Russia or China

Mr. Salm said. For instance, it costs a Western country $5,000 to $6,000 to make a 155-millimeter artillery round, whereas it costs Russia about $600 to produce a comparable 152-millimeter artillery shell, he said.