If US and Russia was at war, US Marines would be patrolling downtown Moscow within a week.
This is just a proxy war, where Russia can't even win over a country the size of Texas, who spent just 1% of the US defense budget each year...
(though they have received quite a few $Billions in help from NATO after invasion).
Russia could have become a truly great European country... but sadly Putin seized power, became a dictator, and he and his friends have stolen $Trillions in wealth from the Russian people. And seen it all go to [bleep]...
The US in the last 40 years:
Socialism for big corporations and military industrial complex