Final solution is a term generally used by English-language historians.  So is great famine.  "western betrayal" is not.  Furthermore, to have it focus on Poland (and to a lesser extent Czechoslovakia) is problematic.  As I noted before, the Kurds and Arabs also refer prominently to "western betrayal."  The term is so vague as to mean practically anything.  Furthermore - of course many things are POV.  But few things are more POV than this.  And, again, why is this any more acceptable than an article on the world Jewish conspiracy that explains the meaning of the term, regardless of one's emotional attitude and one's personal belief as to whether there really is one or not?