WhyLikeThis
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There's only two options in which the war will end:
1. Ukrainian military pushes Russian army back from all its borders, or
2. Russian military succeeds in securing the landbridge it has conquered and annexed.
(im going to be optimistic and rule out 3 Global Thermonuclear War. )
I dont think expecting 2 is particularly delusional, more realistic. Would be only too happy to be wrong though.
4. As has been speculated, a “tactical” nuclear strike by Putin with a conventional retort by NATO.