A person who shares the role or duties of an ambassador, or serves jointly as an ambassador with another person.
From Latin prefix co- (meaning 'together') plus ambassador (from Medieval Latin 'ambactia' via Old French, meaning 'envoy'). The co- prefix was added to create a term for shared diplomatic roles.
Modern diplomacy sometimes requires co-ambassadors—two diplomats sharing one ambassador post. This reflects how international relationships have become too complex for one person to handle alone, even at the highest levels.
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