The political title Consul is used for the official representatives of the government of one state in the territory of another, normally acting to assist and protect the citizens of the consul's own country, and to facilitate trade and friendship between the peoples of the two countries. A consul is distinguished from an ambassador, the latter being a representative from one head of state to another. There can be only one ambassador from one country to another, representing the first country's head of state to that of the second, and his or her duties revolve around diplomatic relations between the two countries; however, there may be several consuls, one in each of several main cities, providing assistance with bureaucratic issues to both the citizens of the consul's own country travelling or living abroad and to the citizens of the country the consul resides in who wish to travel to or trade with the consul's country.