ST:DS9, Duet, Episode 119
I was commenting to Erik that I was getting tired of Kira playing the Bajoran card. Blah, blah, occupation, blah blah, atrocities. It wasn't really until this episode that actually gave me any reasonable insight into her backstory.
The episode asks the question, "How can there be war crimes if there never was a war?"
Which was asked during the episode. And handled well.