The following events were known to occur during 2389:
- Each entry preceded by a <L#> designation indicates the level of Fleet Canon that item has been given by the Department of Creative Resources.
- Items without a designation have not yet been reviewed, or are deemed non-canon events.
- (Parenthesis) and/or italics show references to source material.
- <L5>Infighting continues among the leaders of the Romulan colony worlds. While basic needs are being met and Starfleet is delivering supplies and replicators to every world that will accept their help, the Romulans lack a stable government and the chain of command of the military is chaotic. Throughout the course of 2389, five Romulans try to seize the emperor's throne, more than two dozen people declare themselves praetor, and at least a dozen more claim the role of supreme commander of the Romulan fleet. Most of these erstwhile leaders fall prey to quick assassinations. A fortunate few are simply ignored. (STO).
- <L5>Federation diplomatic teams attempt to organize a conference where representatives from each of the colony worlds can take the first steps to establishing a new government and choosing leaders, but the Romulans cannot even agree on where the meeting should be held and the plan collapses. (STO).
- <L5>The Klingon Empire takes advantage of the confusion with lightning strikes into Romulan space. The empire takes control of the Tranome Sar and Nequencia systems in a matter of days, and is poised to strike deeper into Romulan territory. The Klingons temporarily halt their advance when Starfleet sends a fleet to protect the Romulan/Klingon border, but tensions remain high and there are reports of minor skirmishes between Federation and Klingon starships. (STO).
- <L5>The Klingon conflict with the Gorn, which had quieted after the battle for Gila IV, erupts again when the two powers struggle for control of the Gamma Orionis system. (STO).
- <L5>The Cardassians take a major step toward self-sufficiency when they vote to replace the Reconstruction Committee with democratically-elected leaders. In the weeks leading up to the election, two groups dominate the debate: a civilian coalition with Elim Garak as a prominent member, and a hardliner group calling for the Cardassians to withdraw from the Federation-Cardassian Treaty of 2386 and reestablish the military. (STO).
- <L5>Garak's coalition wins a narrow victory, and in its first act reforms the Detapa Council as a representative body. The council faces its first controversy when it votes to send six ships as a token force to assist the Federation's recovery efforts in Romulan space. Popular opinion is against the decision, and polls show that most Cardassians feel that they should reserve their resources. The Federation Council's decision to cut funding for Cardassian reconstruction by 30 percent makes aid to the Romulans even less popular, and support for the council plummets. (STO).
2388 - 2390