ProtoAvatar
Fleet Captain
Were it me, Firstly, I wouldn't have kidded myself that contracting Garak was going to lead to anything but what it did. So, until I was ready to take it to that level, he wouldn't have been involved.WHAT would you have done, Withers?
Secondly, the argument Sisko left out in his hypothetical conversation with the Romulans (for which Dax was the stand-in) was that the Romulans had reason to fear the Dominion. Not did the Tal'Shiar preemptively attack the Founders but the Romulans themselves showed up to fight the Dominion in Inferno's Light in a knee-jerk reaction. The non-aggression pact was only in place so the Founders could wipe out the Klingons and Federation then they would go for the Romulans who had not only presented themselves as a threat but would in that scenario then be isolated.
Any reasonable power would realize it would be suicide to try to stand alone.
Third, I would have asked Spock how the reunification effort was going and if there was any diplomatic avenue that could be explored there in order to bring the Romulans on board.
Forth, if none of that worked, my final step before ultimately doing something similar to what Sisko did would be to send Odo on a mission to Cardassia. He knew the planet as well as Garak did and probably had more up-to-date contacts. That's not to mention he could blend in a lot easier by impersonating either the Female Changeling or some other high ranking official who would have access to any potential plans The Founders had against the Romulans.
If no plans were discovered and all else had failed... I would consider doing what Sisko did and I might ultimately come to that conclusion myself. I understand he was under a time constraint with the Senators visit but if you're going to take it upon yourself to break the law "for the greater good" you must be certain you have exhausted all other avenues otherwise... your actions, regardless of their intent or outcome, are just... criminal.
-Withers-
The Romulan Star Empire KNEW its Tal'Shiar tried to kill the founders, KNEW they'll be surrounded when the Federation fell.
None of this was unknown or new, and none changed its position: the romulans still didn't enter the war. They were not reasonable, they were delusional, arrogant? YES! But their decision was standing - Vreenak made it clear.
Spock? Do you actually think the Federation didn't try it? Do you think Spock didn't try it?
Odo? A mission to Cardassia was suicide - this was stated clearly in the episode. Garack's Obsidian Order contacts were killed within a day of contact! You think Odo's lower lovel (YES, lower level - Odo was NEVER an Obsidian Order INSIDER) contacts woudn't fare the same?
That's why Sisko produced the 'plans'.
THE EPISODE MADE IT CLEAR - THERE WERE NO OTHER OPTIONS. Certainly not this kind of tactical half-measures you would expect to resolve the crisis in your run of the mill Voyager episode.