Haven't you observed the wars of the last sixty years at least?
As for Russia, it has funds enough....because it has resources and interested buyers. It's also taking resource rich land.
Russia's advantage is manpower and resolve.....As Hitler found out.
Their other advantage is that Putin isn't stupid.....whereas in comparison our leaders are....laden down with group think.
Too kind to our leaders.
Most of them are treasonous.
They would sell their own people out to the highest bidder, and not bat an eyelid.