In the context of the Russo-Ukrainian War, many Russian diplomats and embassy officials were declared personae non gratae by countries around the world in 2022, and many foreign diplomats were also formally asked to leave Russia after their accreditation was cancelled.
Persona non grata means "an unwelcome person" in Latin. In the context of diplomacy or international relations, a persona non grata declaration on a foreign citizen, usually a diplomat who otherwise has a privilege of immunity, is barred from entering the country which issued the declaration.[1]