> And the US has already been undermined by the likes of China, Russia and India

With respect, Russia is being decimated (literally, at least the "big fortresses" that Russia has been gnawing at for months such as Pokrovsk have insane loss rates) by Ukraine's army who are mostly using donated shoddy Soviet-era remainders and decades old Western surplus.

If the US were to wage actual war with modern technology against either Russia or China (whose arms are based off of Soviet designs and stolen American plans), there is no chance in hell either would be able to do much against the US.

India is different but they're at least a democracy that's reasonably worth calling it that (despite Modi doing his best to dismantle it). I don't see any attempts of India to project power anywhere other than in its immediate neighborhood (i.e. the border disputes with Pakistan and China). They're no threat.