Earth and Kazo have created a unique peace. Kazo administers Earth, and Earth controls Kazo. Nothing is really complicated until both humans and Kazos discover the existence of a third intelligent race in the galaxy and try to bring them into the newly developing peace.
Used availability for Piers Anthony's Triple Detente
July 1988 : USA Mass Market Paperback
September 1974 : USA Mass Market Paperback
December 1975 : UK Paperback