Grim kicker on that piece "When they were attacked from both sides in 1939, the Poles decided to fight until they were completely broken. They could have surrendered immediately, and the end result would have been exactly the same. But at least this way, they could look themselves in the mirror. Right now, I think Ukrainians can feel the same way"
(I think Ukraine still has a decent chance to do a lot better than Poland in 1939)