That's because on Game of Thrones, conflict doesn't spring from competing moralities; it springs from competing desires.
Nowhere is this truer than the Israeli-Palestinian conflict.
The fact is that to respond ‘proportionally’ in warfare is merely to ensure the continuance of the conflict.
early 15c., "armed encounter, battle," from Old French conflit and directly from Latin conflictus (see conflict (v.)). Meaning "struggle, quarrel" is from mid-15c. Psychological sense of "incompatible urges in one person" is from 1859 (hence conflicted, past participle adjective). Phrase conflict of interest was in use by 1743.
conflict con·flict (kŏn'flĭkt')
A psychic struggle between opposing or incompatible impulses, desires, or tendencies.