Ha ha ha
Sorry, please don't get bogged down in the details. It's a hypothetical situation.
And how is going AI any better than continuing your little war? What if you and your opponent are having tremendous fun with the war in the west?
I agree that's it's annoying when you're one of the nations from 'the east' in my example. But you've got to make do with the allies you have, not the allies you wish you have.