This is not an admission that Ukraine needs full federalization, but it's already a start. It's what Moscow has been proposing since the Maidan coup.
For all of what passes for Western "intelligentsia" carping on Putin as a Stalin remix, the "sick Russian bear" and stupidities of the same ilk, a strategy lesson is evolving. The Kremlin does have a vision, the will and the means to pursue it, perseverance, and a carefully calibrated method. Sun Tzu would approve it. Don't provoke; wait. Be patient, but not inactive. Accrue your potential. Then retake the initiative. Strike only when the right convergence presents itself. And then the "tactician" on the other side, already blinded because he does not respect you, will be left clueless, wondering what hit him.