Ambassadors are important diplomatic representatives of a country or organization. They are typically sent to foreign countries to represent their home country and to promote international relations. Agents are people who act on behalf of another person or organization, often in a professional capacity. UNESCO is the United Nations Educational, Scientific and Cultural Organization, which works to promote peace and security through international cooperation in education, science and culture. Nuncios are papal ambassadors, sent by the Pope to represent the Catholic Church in foreign countries.