弾道 だんどう だん迎撃 げいげきミサイル制限 せいげん条約 じょうやくだったら
dandōda nge i gekimisairuseigenjōyakudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 弾道弾迎撃ミサイル制限条約

1. If it were a ballistic missile defense treaty.; If it had been a ballistic missile defense treaty.

Tara Conditional