1996, Pocket Books, New York
The Deep Space Nine crew encounter The Hive - a large ship which came from another galaxy and destroyed one of the Bajoran colony worlds and is on it's way to destroy Bajor itself.
This was another interesting Trek book. It's refreshing to read one where the 'bad guys' are not bad at all. The Hive inhabitants are great aliens with inventive technology. And the tie-in with the Cardassians and Bajorans was well established.
Link to journal at bookcrossing