集団 しゅうだん てき防衛 ぼうえうじゃありませんでした
shūdante kibōe uja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 集団的防衛

1. Was not collective self-defense.; It wasn't collective self-defense.

Past/Perfective
Negative
Polite
Terminal Form