Where does “冷たい戦争” come from?

冷たい戦争 (Japanese) comes from Japanese 冷たい, from Japanese 爪 — nail; claw.

Ancestry of “冷たい戦争”, step by step

冷たい戦争 traces back through two separate lines of ancestry.

via Japanese 冷たい

StepLanguageWordMeaning
1Japanese冷たいcold
2Japanese爪nail; claw

via Japanese 戦争

StepLanguageWordMeaning
1Japanese戦争war; to wage war
Every word from Japanese 爪 →Every word from Japanese 冷たい →