>it is necessary that the designated countries be neutral
it's impossible and you know that well, both sides will be always fighting to gain influence over them and it will just lead to endless chain of crisisess and conflicts, ukraine is perfect example of how two sides of country were slowly pulled apart both by poccnr and wect.
Hohol peasants used to kill polish peasants who were supposed to colonize and replace them, while russian communists used to kill polish communists who were loyal to their cause - what's even the difference, the only thing slavs are capable of producing is parody of a healthy society