TREATY AT DOONA (originally TREATY PLANET)
With Jody Lynn Nye

Several years after resolving a crisis of treachery on Doona, the Humans and Hrrubans 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.

This novel is included in the compilation DOONA.