“The only move is not to play” is from the 1983 movie “War games” whose theme is a kid hacks into a government computer that controls nuclear weapons, the computer almost starts a nuclear war but stops short after running simulated scenarios which all lead to total annihilation.
Sounds like a bug caused the bots to stop targeting each other, and shooting one simply triggered some "return fire" function. Not sure why this article based on an image board post is news, but here we are.
If you read the image board thread the article links to, it's immediately obvious that this is 100% fake. The first line claims Quake III Arena (1999) is using neural networks for bot AI which is total nonsense.
World peace achieved in such a way might only work when anyone showing the first signs of violence is immediately and collectively targeted for punishment by everyone else. That would suggests that sanctions _do_ work, but only in some strange kind of Stalinist way, or worse, sanctions don't work, and you have to wipe out the whole country and move in. I'm guessing these interpretations don't translate all that well to collective societies like those formed by human beings.