存そん立りつ危き機き事じ態たいそんりつききじたいMeanings1nounthreat to national existenceA formal legal term used in Japanese security legislation to describe a situation that poses a threat to the nation's survival.存そん立りつ危き機き事じ態たいとは、我わが国くにの存そん立りつが脅おびやかされる