Proportionality  The goal of the war should be proportional to the offense, and the benefits proportional to the costs. For example, when an attacker violates a nation’s border, a proportionate response might extend to restoring the border, not sacking the attackers’ capital. A war must prevent more suffering than it causes.  The Coalition that formed under the aegis of the United Nations to repel the Iraqi invasion of Kuwait fought a proportional conflict to the extent that they did not march on Baghdad after they had pushed the Iraqi Army out of the occupied territory.