攻守 こうしゅ同盟 どうめいではありませんでした
kōshudōmeidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 攻守同盟

1. Was not a defensive-offensive alliance.; Was not an alliance of joint defense and offense.

Past/Perfective
Negative
Polite
Formal Register