With the female changeling currently imprisoned by the Federation, and Odo returned to his people. Linking with them and by extension giving them the cure and the knowledge of what Section 31 did to win the war. This includes the Federation Council and Starfleet Command signing off on withholding the cure from the changelings. The changelings have cause to instigate another conflict in retaliation if they choose.
Question is, What do you think the Dominion could do differently to win next time? The Dominion had no trouble kicking in the teeth of the Fed., Klingons and Rommies.
I don't have the imagination to see what the Dominion could do better in a rematch. Would someone mind coming up with one?