交こう戦せん権けんこうせんけんMeanings1nounright of belligerencyLegal term referring to the right of a state to engage in war under international law. Often discussed in the context of Japan's constitutional renunciation of war.日本にほん国こく憲けん法ぽうは交こう戦せん権けんを否ひ認にんしている。