To defeat the aggressors is not enough to make peace durable. The main thing is to discard the ideology that generates war.
Sovereignty must not be used for inflicting harm on anyone, whether citizen or foreigner.
Economically considered, war and revolution are always bad business.
War prosperity is like the prosperity that an earthquake or a plague brings.
The state can be and has often been in the course of history the main source of mischief and disaster.