Like lets say that during the height of the Dominion war (when Starfleet was at their weakest), the Borg had invaded the Alpha (and then the Gamma) quadrants with a fleet of ships. Do you think this would've forced the Dominion and the Federation to end their war with each other to make an alliance to defeat the Borg? Or do you think the Dominion would've tried to fight both the Borg AND the Federation?