Russia has changed quite a bit since Putin took leadership, and for the better

Well yeah compared to the borderline failed state that was 90s Russia, that's not a difficult task, accomplished by getting the other billionaires to keep 1% of the wealth they're extracting in the country.

This is why Trump wants

Trump is literally senile. There might be people in his administration who feel that way, but the administration's policy is so demented I don't think we can attribute clear motivations to anything.