日米 にちべい安全 あんぜん保障 ほしょう条約 じょうやくでしょう
ni chi bēanzenhoshōjōyakudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 日米安全保障条約

1. Probably the Japan-U.S. Security Treaty.

Polite
Presumptive
Conjecture