noun
threat to national existence
A formal legal term used in Japanese security legislation to describe a situation that poses a threat to the nation's survival.
存立危機事態とは、我が国の存立が脅かされる事態を指す。
A 'threat to national existence' refers to a situation where Japan's survival is threatened.
Compound of 存立 (existence), 危機 (crisis), and 事態 (situation). A modern legal term.