Star Trek: The Next Generation: Starfleet Academy, book 02 : Line of Fire
Peter David1993

MISSION TO DANTAR

Mysterious space raiders are threatening the joint Federation-Klingon colony on the remote planet of Dantar, and pitting the two sides against each other. Worf and his fellow first year cadets - Zak, Tania, Soleta, and Mark - have accompanied their teacher to observe the negotiation process, but soon find themselves in the middle of an intergalactic dispute.

Just as Worf and the other cadets arrive, they discover the Klingon Empire has sent its own diplomatic team, including Klingon cadets, to investigate the attacks. As the cadets from Starfleet Academy come face to face with their Klingon counterparts, tensions quickly mount as each side accuses the other of staging the raids.

While a deadly space battle rages overhead, Worf will face his ultimate test as his Klingon heritage and future in Starfleet collide.