The Permanent Observer of the Holy See to the United Nations
is the representative of the Roman Catholic Church
at the United Nations. The diplomatic mission does not have full ambassador
status and thus cannot vote--a decision it has freely taken--but the Holy See may choose to become a full member at any time.
Since Switzerland changed its status to become a full-fledged member state of the UN in 2002, the Holy See – which, per international law, remains a politically neutral entity – is the one state to sit in the UN as a non-voting delegation with "permanent observer" status.
Permanent Observers of the Holy See to the United Nations