This is the 11383rd most frequent Russian word.
дипломатам
"To diplomats" (dative plural form of "дипломат").
Here, 'дипломатам' is in the dative case plural of 'дипломат', used to indicate the receiver of the action—diplomats are the ones receiving the message.
Мы передали важное послание дипломатам.
We delivered an important message to the diplomats.
The term 'дипломатам' here is again in the dative case plural, emphasizing the idea that the diplomats are the recipients of the given gifts.
Подарки были вручены дипломатам.
The gifts were handed to the diplomats.
In this instance, 'дипломатам' is used in the same dative case plural, showing to whom the details of the meeting were communicated.