Yes, if it was acting rationally the US Would not have spent billions trying to blow up an 80 year old man while massively increasing the price of oil and fertiliser globally leading to economic instability
But the US has not acted rationally. It hasn't since January 2021.
There could be a rational explanation if you assume US administration is compromised by Russia and Ayatollah's son wanted him out to assume power. One phone call to Putin, Putin's one phone call to Krasnov and everyone is happy. Son gets the power, Russia gets sanctions lifted, higher oil price, US and allies spend kit that cannot be now sold to Ukraine, Krasnov gets to play the stock market. Win-win-win.