Ironically, it was the Gallic chief Brennus that reportedly said “Vae victis” after he sacked Rome.

When he defeated the Romans, he demanded a sum of gold as ransom. The Romans complained that his scales (used for weighing the gold) were unfair, so he threw his sword onto the scales to make it worse and then stated: “Vae victis” (woe to the defeated).

“We had a peace treaty and you forgot about a very literal reading of Clause III Subsection VIII so it is morally permissible for us to obliterate your polity (this is called iustum bellum, which makes us superior to you warmongering barbarians). Have a nice day :)”