防衛 ぼうえう計画 けいかく大綱 たいこうであれば
bō eukeikakuno taikōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 防衛計画の大綱

1. If it were the outline of the defense plan; If the outline of the defense plan existed

Ba Conditional