Consul

A consul is an official appointed by a government to reside outside the government's territory and oversee that government's interests and provide assistance to its citizens abroad.

Consuls were among the highest officials in the Romulan Senate. Admiral Valdore promised Senator Vrax that he would be First Consul in the Senate. 

In 2287, General Korrd was the Klingon consul to the Planet of Galactic Peace. Starfleet Operations also considered Federation representative St. John Talbot and Romulan representative Caithlin Dar as consuls. 

In 2375, Burkus served as the Deputy Consul of the Monean Maritime Sovereignty.