society > authority > rule or government > politics > international politics or relations > diplomacy > act or serve as diplomat [verb (intransitive)] (5)
intransitive. To act or serve as a diplomat or diplomatist; to practise diplomacy; to use diplomatic arts; to act with address or astuteness.
Subcategories:
— serve as plenipotentiary (1)
— be resident as ambassador (2)
— take part in summit meetings (1)