>> How exactly do you picture it ending?

With a peace agreement. Russia withdraw its troops, ends occupation and pays for the inflicted damage. Sounds fair, no?

Thank you. It's an answer, but it's very light on the details.

How do you deal with the fact that the large majority of the population in Crimea (and probably a lot of Donbas too) preferred union with Russia over staying in Ukraine? Do you deny them the vote for a generation? Ethnically cleanse them? Or do you give them a big hand on the rudder in the new unified Ukraine, like they used to have? Either solution seems like it's a powder keg for war to break out again.

So do war reparations, of course. That's basically how WW2 happened. As I see it, the best case scenario of Russia paying for all the damages is that it becomes an impoverished breeding ground for a lot of vengeful terrorism. Maybe you're more optimistic?

Also, is this peace agreement really more likely to happen if Moscow has been London blitz-droned into submission? When did your country last sue for peace in such a situation, and how long did that last? I don't have much sympathy for "political realists" in practice, but in theory, I agree with them that you should expect other states to behave like your state would have behaved.