The link between loyalty and ethnicity was taken for granted in the Europe of 1938. Hitler was using this very argument, at this very time, to claim that the three million Germans of Czechoslovakia, and the regions they inhabited, must be allowed to join Germany. In September 1938 at a conference in Munich, Britain, France, and Italy had agreed to let Germany annex the western rim of Czechoslovakia, where most of those Germans lived.
— Bloodlands (Timothy Snyder), Loc. 2392–5
Oh, I see where Ruzzianz were taking the inspiration from!