> Poland green lighted the invasion of Czechoslovakia, which ultimately led to its own invasion. I think that's a no-brainer considering that Poles helped them

> Poland green lighted the invasion of Czechoslovakia, which ultimately led to its own invasion. I think that's a no-brainer considering that Poles helped themselves to annex parts of Czechoslovakia. https://en.m.wikipedia.org/wiki/Polish–Czechoslovak_border_conflicts https://en.m.wikipedia.org/wiki/Polish–Czechoslovak_border_c...