19 - Planet of the Damned (Version 3) by Harry Harrison

In a galaxy on the brink of annihilation, two planets stand poised for nuclear war, threatening to obliterate one of them and claim millions of lives. Enter Brion Brandd, an outsider chosen by the Cultural Relationships Foundation, who holds the key to preventing this catastrophe. With the weight of the universe on his shoulders, can he navigate the complexities of interplanetary politics and stop the inevitable? Discover this timeless 1962 science fiction gem by the brilliant Harry Harrison, brought to life by M. Nelson.