I loved it, and to me, there is no "dilemma" there. If Sisko doesn't act, the UFP is in danger of losing the war.
Sure there is. Sisko did some pretty crappy things in this episode, and they -should- weigh on him. But the "good" (if you want to call it that) of getting the help to win the war, outweighs the moral implications of how he accomplished it.