Exodus: Empires at War: Book 7: Counter Strike.

Sean and the Empire have fought their way out of the corner. Now it's time to strike back. The Ca'cadasans have been hit hard, but they are not yet out of the fight. The ambush worked, to a point. The Cacas took grievous losses, but still retain a powerful force in Imperial Space. And they have sent for the ships they had besieging the New Terran Republic to back them up. The Donut, the enormous station used to generate the wormholes that are the Empire's major technological edge, is in dan...