Tzenkethi

The Tzenkethi are the natives of the planet Tzenketh and a spacefaring civilization led by a ruler called the autarch.

The United Federation of Planets and Tzenkethi fought a war during the 24th century. The USS Okinawa, under the command of Captain James Leyton, fought against a number of Tzenkethi raiders during this war. En route to head off the Tzenkethi during the war in 2360, the USS Cartwright, under the command of Captain Sydney Caldwell, went missing and was presumed destroyed. (: "Dakota]", "[[Bitter Sweet (TCE episode)|Bitter Sweet")

No "official" dates were pegged down for the Federation-Tzenkethi War, but for Star Trek: The Cantabrian Expeditions'', the author came up with the year 2360 as being a year in which the war took place. This would allow for Benjamin Sisko to have his promotion to lieutenant commander and first officer aboard the Okinawa before his assignment as first officer aboard the USS Saratoga and explains why the war was never mentioned on ''Star Trek: The Next Generation.

In late 2371, Federation ambassador Krajensky told Deep Space 9 Captain Benjamin Sisko the Tzenkethi Autarch has been deposed. In response, the USS Defiant was to proceed to the Federation-Tzenkethi border, reinforcing the Federation presence to the new leading faction. Investigation en route led the Dominion had engineered the mission to start another war between the Federation and Tzenkethi. No coup d'etat had taken place on Tzenketh. This Krajensky was, in fact, a Founder, who attempted to commandeer the Defiant to attack a Tzenkethi settlement on M'kemas III. The Founder was stopped before the Defiant could reach the planet. 

Captain Sisko stated in "The Adversary" a line implying there have been more than one war between the Tzenkethi and Federation, but this could have been a script error or implying there were skirmishes or several periods to the same war.

Cantabrian first officer Elizabeth Singh claimed, in 2372, she'd seen one or several Tzenkethi before. (: "Catalyst, Part One")