the.com/diplomacy
The art of telling someone to go to hell so nicely they look forward to the trip.
means The practice of managing relations between nations or people through negotiation rather than force.
from From Greek diploma, a folded document — literally a doubled-over letter that granted privileges, later the official credentials carried by envoys abroad.
Folded paperDiploma meant folded twice, hence sealed credentials
ImmunityEmbassies count as foreign soil legally
Protocol orderSeating ranked by date of arrival