How does the Russo-Ukrainian War end?

Sometimes you change the subject, and sometimes the subject changes you

At first, no one could imagine that the Russo-Ukrainian war could begin. And yet it began.  And now, no one can imagine how it will end.  And yet end it will. 

War is ultimately about politics.  That Ukraine is winning on the battlefield matters because Ukraine is exerting pressure on Russian politics.  Tyrants such as Putin exert a certain fascination, …