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riigi alaline ametlik esindus teises riigis

Merriam-Webster:
1: a body of diplomatic representatives
specifically : one headed by an ambassador
4: the official residence and offices of an ambassador

ülevaateid
https://www.onlinevisa.com/faq/what-is-the-difference-between-a-consulate-and-an-embassy/

https://en.wikipedia.org/wiki/Diplomatic_mission