Well I will say that the Ukrainian’s have managed to stop the Russian juggernaut in a meat grind. They have averted being overrun in the start of the war to being a war of attrition. But war attrition is long, slow and bloody. However time seems to be now on the Ukrainian side as a long campaigns do not go well with an aggressor army. The economics of defensive warfare is low as compared to aggression. You can defend with a small well trained gorilla army and still win strategically like the Taliban did to US. Strategically this will become a gross error on which Russia if not stops, the recovery is going to be painful. For Russia , the only way forward now is to retreat and consolidate. Re engaging if they want needs to be calculated again. Russia should not go down the Vietnam or Afghanistan route as it does not have the economical backings to support that route.