Or we could just admit that sanctions as a system do not work, based on the past thirty years evidence from repeated instances of them not working.
The way to harm the Russian economy was always (and is still now) to harm what it is dependent on; energy supplies. If we decarbonise and help the rest of the world to do so (in an open and honest way), the current Russian economy would collapse.
We saw with COVID what a small reduction in demand did to the oil price. We’ve seen what the small efforts towards renewables has done since Feb 2022 to contain the rise in gas and oil prices. We should do much more in that regard.