Tahna tells Kira that after he destroys the wormhole, the Federation will leave Bajor. However, the Federation was asked by the provisional government to be there before the wormhole was discovered, so there's no reason they would leave if it went away.
When Gul Dunar enters Sisko's office, you can clearly see sweat dripping down from his right ear. Clearly Vaughn Armstrong was sweating profusely underneath the makeup and lights.
Commander Sisko refers to the Cardassian ship's commander as Gul Danar. However, the Gul never introduces himself by name any time during the episode.