Just War Theory

Question 1

What is the Just War Theory?

Answer 1

The belief that war is acceptable in certain situations. This theory consists of a list of conditions (by Thomas Aquinas) which must be met in order to justify war.

Question 2

What are the key criterias for a just war?

Answer 2

Just cause – e.g. self-defence or protecting the innocent
Declared by proper/religious authority – e.g. government or ruler
Right intention – to promote good and peace, not revenge
Last resort – all peaceful options must be tried first
Reasonable chance of success – to avoid pointless violence
Proportionality – minimum force; avoid harm to civilians

Question 3

What are the different parts of the Just War Theory?

Answer 3

Just Ad Bellum - When it is right to go to war.
Just In Bello - How a war should be fought.
Just Post Bellum - Fair conduct after the war has ended.

Question 4

What do Christians believe about the Just War Theory?

Answer 4

Many Christians support it as a way to prevent unnecessary violence and ensure war is morally controlled. It respects Jesus’ teachings on peace, while allowing protection of the innocent when absolutely necessary.
Although fighting a just war is acceptable, it is always much better if no war was possible.
Some Christians even disagree with the Just War Theory because they say it defends the concept of war, which may eventually lead to accepting war.

Question 5

Quote supporting peace as a goal of war:

Answer 5

“Blessed are the peacemakers, for they will be called children of God.”
– Matthew 5:9

Question 6

Quote against unnecessary violence:

Answer 6

“For all who draw the sword will die by the sword.”
– Matthew 26:52