DS9 Season 6 Episode 1 A Time to Stand

Plot

Three months after the events of "Call to Arms", the Federation-Klingon alliance is badly losing the Dominion War. After hearing news that the Seventh Fleet was almost obliterated, Captain Sisko and his crew are assigned to pilot a captured Dominion ship into Dominion/Cardassian territory and destroy a valuable stockpile of Ketracel White, the drug that controls the Dominion's Jem'Hadar foot soldiers.
The navigational eyepieces used on the stolen Dominion vessel induce headaches in Captain Sisko. Cardassian ex-spy Elim Garak, an informant for Sisko's crew, observes that the eyepieces seem to have no ill-effects on Cardassians, so he volunteers to wear the device. Later, Sisko's ship is fired upon by the USS Centaur, unaware that Sisko's ship is staffed by fellow Federation officers, and Sisko is forced to return fire. Both ships escape but the danger is not over yet: the Starfleet officers are now deep behind enemy lines.
They succeed in destroying the Ketracel White depot, but the ship's engines are damaged in the explosion; without the use of warp drive, they are many years' journey from home.
Meanwhile, on Dominion-occupied DS9, friction arises between Dukat and Weyoun. Dukat is optimistic about how well the war is going for the Dominion-Cardassian alliance; but he has not yet been able to disable the minefield blocking passage to the wormhole, and Weyoun reminds him they are vulnerable without reinforcement and resupply from the Gamma Quadrant.
Bajoran Major Kira Nerys is uncomfortably reminded of the Cardassian occupation of Bajor, but Quark points out that the Dominion's occupation of DS9 is far less brutal, and the Dominion is holding the Cardassians in check. Sisko's son Jake is on DS9 as a reporter for the Federation News Service, but Weyoun claims his articles are biased against the Dominion, and refuses to broadcast them until he sees "open-mindedness".
Dukat refuses to employ Bajoran security deputies, to the frustration of security chief Odo, a rogue Changeling not affiliated with the Dominion. Major Kira convinces Odo to use his status as a Changeling to get what he wants. Genetically programmed to see him as a god, Weyoun instantly accepts Odo's request to reinstate his deputies. Odo is also offered a seat on the station's ruling council, giving him a voice in station policy. He accepts.