You were applying "a well armed society is a polite society" to geopolitics. I disagree. Weapons are what you fall back on after all the other options have failed. A "ballot box, jury box, ammo box" sort of deal.
Education and tolerance are the tools of peace. If your leaders are extremists who can't compromise, pointing fingers for who you should hate more, jump to labels and teams, and issue ultimatums rather than dialogue, then you are on a road to war.
I know, right? That quote led me to the brain-bleach-required section of Wikipedia. If you want to ruin a nice Friday too:
https://en.wikipedia.org/wiki/List_of_ethnic_slurs
Although above that one, "goombah" can be (not always) used as a slur against Italians? Growing up with Super Mario, that is kinda funny but then also concerning. Like it's been hiding in plain sight.