攻守 こうしゅ同盟 どうめいじゃなかったです
kōshudōmeijanakattadesu

Noun
Desu Copula

The polite, past negative form of 攻守同盟

1. Wasn't a defensive-offensive alliance.; Wasn't a mutual defense pact.

Past/Perfective
Negative
Polite
Casual Register