Persona Non Grata

A declaration of persona non grata is formal notice by the receiving State that a diplomat is no longer acceptable. Under Article 9 of the Vienna Convention on Diplomatic Relations, 1961, the receiving State may make this declaration at any time and need not explain its decision. It requires action by the sending State but does not, by itself, instantly remove every diplomatic immunity.

Convention mechanism

The declaration operates through the sending State rather than as a direct dismissal by the receiving State.

• The sending State must either recall the diplomat or terminate that person's functions in the diplomatic mission.
• A person may be declared persona non grata even before arriving in the receiving State.
• If the sending State fails to act within a reasonable period, the receiving State may refuse to recognize the person as a member of the mission.

Effect on diplomatic status and immunity

Loss of acceptability and termination of immunity are not necessarily simultaneous. Under Article 39, privileges and immunities normally continue until the diplomat leaves the country or until a reasonable period for departure expires.

• The declaration therefore does not ordinarily authorize the diplomat's immediate arrest or prosecution while applicable immunity and personal inviolability continue.
• Immunity remains permanently applicable to acts performed by the diplomat in the exercise of official functions, even after the posting ends.

Diplomatic significance

Persona non grata is a lawful mechanism for ending an individual diplomat's presence without requiring the receiving State to prove misconduct. It protects the receiving State's sovereign discretion while allowing an orderly recall or departure under diplomatic law.