国際こくさい連合れんごう事務じむ総長そうちょうであれば
kokusairengōji musōchōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 国際連合事務総長

1. If the Secretary-General of the United Nations; Were the Secretary-General of the United Nations

Ba Conditional