If he just withdraws, the Ukes will surely go after the areas Russia gobbled up in 2014 including Sevastopol.
I think the Ukes should use this opportunity to take back eastern Ukraine.
Crimea is probably a harder battle because of geography. And I don't know what the people there would support.
I read the east has been controlled by Putin supported thugs that have just run roughshot over people's rights. They may well want to be liberated by Ukraine even if they are Russian speaking.
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