casus belli

Etymology
From +. The English homographic plural casus belli is also taken from Latin, where the plural of this phrase would be, with a long vowel ū in the first word, as is typical of the nominative plural of fourth-declension nouns.

Noun

 * 1) An act seen as justifying or causing a war; an act of war.

Translations

 * Arabic: ذَرِيعَةُ الْحَرْبِ
 * Armenian:
 * Belarusian: ка́зус бэ́лі
 * Chinese:
 * Mandarin: 戰爭藉口, 開戰理由
 * Finnish: sodan aihe,
 * French:
 * Georgian: კაზუს ბელი
 * German: Casus Belli,
 * Bavarian: Kasus Belli
 * Greek: αφορμή πολέμου
 * Italian: casus belli
 * Japanese: 開戦理由, 開戦事由
 * Korean: 개전 이유(開戰理由), 개전 리유(開戰理由), 전쟁 명분(戰爭名分)
 * Latin: cāsus bellī
 * Persian: بهانهٔ جنگ, کیسوس بللی
 * Polish:
 * Portuguese: casus belli
 * Russian:
 * Thai: เหตุแห่งสงคราม
 * Ukrainian: ка́зус бе́ллі

Etymology
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Etymology
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Etymology
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