What is the smallest country in the world?

Vatican city, is the world's smallest country at 0.44 square kilometre. It is an urban enclave, with a population estimated at 911, completely encircled by Rome. Vatican City has its own bank and coinage, border controls, stamps, telephone system, civil and criminal codes, newspaper, website, and television and radio stations, which broadcast aroundbthe world. It is ruled by the Pope, who is elected for life by the Sacred College of Cardinals, whose voting members must be under the age of 80.