That’s not true. History provides examples. Do they all last forever? Also no - because time.

History also has plenty of examples which required violence. So their every statement holds.

Some conflicts forces one side to turn the dial, the French revolution is one. Which is the cornerstone building the majority of European democracies, as that was a way for the ruling/royal class to give back power to the peasants, to ensure they didn’t get inspired by some guillotines