Seems like a Phase I, Phase II plan to me.
First phase is recruiting allies, gathering information, and offering an open hand from a well-informed position.
If that works, great. If it doesn't, proceed to the second phase...
Wholehearted support of the Romulans both in material and keeping the Klingons off their back, paired with diplomatically isolating the Breen. Telling everyone, "Hey, we tried it the nice way. We really did."
I can get behind that!