Treaty at Doona - Anne McCaffrey, Jody Lynn Nye

Several years after resolving a crisis of treachery on Doona, the Humans and Hrubans encounter a new threat to their peaceful coexistence…The Gringgs are not the first alien visitors to Doona, but they are the first to offer friendship-and a proposal to partake in a trade agreement being drawn up by Doona’s leaders. Some are willing to trust the Gringgs; others question their true motives… and a battle of diplomatic unrest ensues.

With Doona’s military forces at the ready, the planet once again falls under the dark shadow of uncertainty-and self-destruction…