Most wars are probably lose lose situations, at least in a certain sense. When I wrote win I meant Ukraine not being controlled by Russia. Even though those scenarios are probably not likely, there are certainly some imaginable scenarios. There could be a diplomatic solution or Putin could give up due to internal opposition or for economic reasons. If there was a no-fly zone, maybe the Ukraine could have a fighting chance. NATO is obviously very reluctant to enforce one, but maybe non-NATO countries could be encouraged to do this. The outlook is certainly bleak but there will be an outcome.