Anything is possible. But think about it. Donbas voted in favor of being annexed into Russia. Putin said no. He doesn't want to be in charge of Donbas where there is more Russian support. If he crosses the Dnieper, Western more Polish Ukraine will go completely bonkers and war will be on. All Putin wants is a geographical buffer and the missile launchers to moved back a bit. He has the first thing. The second thing is what the talks are about.