We are talking on the basis that the puppet pm is negotiated away, it seems to have been dropped but may pop up again.
The puppet pm is a non starter and seems to have disappeared in the Russian statement.
the breakaways and crimea are lost unless they want to invade over the line of control, yes it’s wrong but they didn’t control them last week. Get them demilitarised so there is no threat to rest of the disputed land in Ukraine proper and the shelling stops.
constitutions can be changed , they could never have joined nato with an outstanding territorial dispute - it’s not allowed.
the eu can be fudged in a few years.