A JUST WAR
THE FIVE RULES
St Augistine wrote two critea for Just War, but Aquinas is credited for writing them clearly and adding philosophy. He also contributed the criteria, right intention. Other philosophers debated new criteria over 500 years, and eventual rules were agreed. The rules can be written as 5, 6 or 7.
1. CALLED FOR BY AUTHORITY
The war must be started and controlled by the state and/or its ruler.
2. REASON MUST BE JUST
The reasons for going to War must be good in themselves. They must not take part in the War, if the only reason is to exploit the enemy.
4. RIGHT INTENTION
There must be no unreasonable conditions, such as unconditional surrender, cession of territory or means of livelihood, added to the orginial war aims.
5. MUST BE LAST RESORT
All other means of securing justice mush have already been exhausted. Negotiations, statements of intent, police actions should all have been previously tried prior to the war.
7. PROPORTIONALITY BETWEEN MEANS AND ENDS
The good to be achieved must never be out of proportion to the means used. The question should be asked whether similar ends will be achieved with fewer casualties.