While it is charming to imagine that humans are capable of rational behavior, history shows us the opposite is generally true. Zelensky's plan is largely to show his allies that he's being reasonable, and we can't fault him for that. But it is blindingly obvious that the only outcome that would ensure lasting peace in Europe is for Russian forces to be crushed beyond repair, thus triggering regime change in Russia. This in turn would result in Russia fragmenting into smaller States, each ruled by a thuggish warlord whose primary concern will be to loot as much as possible in as short a time as possible. Thus degraded, none of these mini-Russian nations will be capable of posing a meaningful threat to the rest of the world.