Terok Nor: Dawn of the Eagles by S.D. Perry
Twenty years after their conquest of Bajor, the Cardassians have tightened their grip on the captive planet; but they have not succeeded in crushing the relentless Bajoran resistance, which is steadily chipping away at the occupiers' hold. As violence escalates across Bajor, the Cardassian military launches one last desperate surge to crush the insurgency once and for all. For Bajoran and Cardassian alike in this seething world of suspicion and retribution, nothing less than survival is at stake. And then one ambivalent key player in the decades-long struggle finally chooses sides, irrevocably altering the destinies of two worlds...