I think this is pretty big news, given Medvedev's elite status and hawkish credentials. Medvedev wants a Korean-style demilitarized buffer zone for it's annexed territories.
Russia wants demilitarised buffer zones in Ukraine, says Putin ally
Like I predicted months ago..... Korean-style frozen conflict... that eventually ends in a stalemate along line of actual control. It does not appear Russia is banking on infrastructure attacks, oil/gas embargos, or disproportionate K/D ratios to collapse the regime.... they simply want to get the maximum territories within the annexed oblasts/provinces, and set up an DMZ-style buffer zone. That means Kiev, Odessa, and Kharkiv are not on the table, and why retreat from Kherson makes strategic sense if they wanted defensible buffer zones.