A diplomat; an official representing their country abroad engaged in negotiations and maintaining international relations.
彼は外務省に入り、数年後には外交官としてロンドンに赴任した。
He joined the foreign ministry and a few years later was posted to London as a diplomat.
外交官は相手国との信頼関係を築くことが重要だ。
It is important for diplomats to build trust with the countries they deal with.
大使は通常、最も高位の外交官として大使館を率いる。
An ambassador usually leads an embassy as the highest-ranking diplomat.