Regulus IV

 is the fourth planet in the Regulus System of the Celes Sector. It is home to a Federation colony and houses the largest embassy in the sector.

Mission involved

 * : The player has to take care of security during a diplomatic meeting between the Klingon Empire and the Federation on Regulus IV. Ambassador Kas invited Miral Paris, who is said to be the Kuvah'Magh, as a mediator to the peace conference. However, spurred by B'vat's propaganda, the talks are sabotaged by Klingons and their Orions mercenaries who believe Miral to be a false savior. Although the talks have failed, Kas eventually assists the player in chasing B'vat away before he can abduct Miral Paris.