Crimea, Crimea and Crimea

How feasible is it to imagine that this war now unfolds in a way in which ukrane really, really does have the upper hand and is able to push russian forces essentially out of the country? I think it's possible, but i won't even begin to try to call that. Crimea is always the hardest thing to see how the ucranians pull off, because it's just so easy to defend. There's a narrow neck of land that connects it to the mainland,. The russians would really fundamentally have t ju break and flee it.