Domestic analogy is an international affairs term coined by Professor Hedley Bull.[1] Domestic analogy is the idea that states are like a "society of individuals". The analogy makes the presumption that relations between individuals and relations between states are the same.[2] The domestic analogy is used when aggression is explained as the international equivalent of armed robbery or murder. A person can look at international affairs like a society of people, except there is no police, and every conflict threatens the structure as a whole with collapse.[3]
In his famous book Just and Unjust Wars, Michael Walzer uses the term to explain what is a just and unjust war.
. Michael Walzer. 1977. Just and Unjust Wars . registration. Basic Books. 0-465-03705-4 . p. 58-59