Thursday, November 18, 2010


Under the terms of the Vienna Convention governing the conduct of diplomats, an individual who is no longer welcome in a host country is declared persona non grata and is required to return home within a specified period. Although such expulsions are often made public, the alternative is a private demand for the withdrawal of a named person, an act known as a “silent PNG.” The principal of reciprocal diplomatic immunity was established in England in 1708.