The only mistake Russia made is that they have gone slow to avoid civilian casualty. This has give a window of opportunity to NATO to supply Ukraine with a lot of weapons which could enable an insurgency in the future. Russia should have gone with full might, captured Ukraine very quickly and seal the borders on the west so no weapon can come in.
A man who has erection difficulty can show a lot of balls to a 70 year old grandma, not with a 20 year old nympho.
French colonialists brought numerous hardship in the defenseless African poor countries. I hope they can show the same balls to Russians by sending their military