Theoretically, the idea of another country invading mine and then laying down such harsh conditions for "peace" doesn't seem like peace-making to me. There's nothing that says Russia won't invade again and try to take over more territory little by little. And what, specifically, does "Ukraine changes its Constitution to ensure neutrality" mean? If Ukraine recognizes Donetsk and Luhansk as independent, what's to keep them from allying with Russia to take more Ukraine territory?
It all seems to me like Russia is trying to create a new USSR.
Nobody is invadng your country, though.