So surprising that there is only one review for this episode, this episode which is possibly one of the best pieces are Star Trek ever made. Not going to give anything away but watch this with Favour The Bold, not sure why they made them 2 parts as together they stand up well as 90 min of awesomeness the like of which has seldom been seen before in Star Trek history.
The story here is brilliant, full of action, lots of loose ends tied up, lots of characters finding their own true courage and realising what it is they really believe in and what's important to them.
Superb acting throughout, especially Dukat and the Vorta. The action sequences are some of the best ever seen in Star Trek and you'll wish they went on for longer. Yes the shields weren't animated but folks this was 1997 and CGI power is nothing like it is today.
If they ever make a new Trek series then they should take the best elements of TNG and DS9, mix them up and you'll have a guaranteed success. It's hard to choose between DS9 and TNG but those two certainly are way ahead of the other three series, and this is one of the best episodes of them all.