集団 しゅうだん安全 あんぜん保障 ほしょうではありませんでした
shūdan'anzenhoshōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 集団安全保障

1. Was not collective security.; Was not a group safety guarantee.

Past/Perfective
Negative
Polite
Formal Register