Apostolic Delegation to the Antilles
The Apostolic Delegation to the Antilles represents the interests of the Holy See to officials of the Catholic Church, civil society, and government offices in several nations in the region with which the Holy See has not established diplomatic relations. The position of Apostolic Delegate is not a diplomatic one, though the Delegate is a member of the diplomatic service of the Holy See.
Source: Wikipedia — Apostolic Delegation to the Antilles (CC BY-SA 4.0)