Quo Vadis, Ukraine?

Why does Ukraine's proxy war continue and the peace negotiations fail?
Have we understood the conflict right? Do we know its history?
If we have misunderstood the conflict in the West - then our way of solving it is also wrong.
Sources e.g.:
-Jacques Baud: "Operation Z"
Baud is a retired colonel of the Swiss intelligence service who has acted as a NATO advisor in Ukraine in 2015 and in several peacekeeping operations.
-Oliver Stone: Ukraine on Fire, Ukraine Revealed
-Jeffrey Sachs..