I had worked with a Russian PHD chemist years ago. Two things that stick in my memory is one, He said the break up of the Soviet was due to their war in Afghanistan, enormous economic costs. I had believed it was due to Russia spending trying to keep up with U.S. spending on star wars plans.
This is an oppurtunity to cause real harm to Putin. Biden plays this correctly, he can break Russia. Lay low until the invasion turns into an occupation, then supply the Ukrainians with massive support for their
insurgency. Prolong the conflict until Putin realizes it to costly. The U.S. just suffered through an endless war in Afghanistan, lets learn from our mistakes and use it against Russia.
The second thing I remember he said was, the most beautiful women in Russia come from Estonia.