門戸 もんこ開放 かいほう政策 せいさくでしょう
monkokaihōseisakudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 門戸開放政策

1. Open-door policy, likely.; Probably an open-door policy.

Polite
Presumptive
Conjecture