The Back Channel: The Human Division, Episode 6

About the book

The Conclave brings together hundreds of alien species, including many deeply hostile to humanity. As tensions with the Colonial Union grow, its leader Tarsem Gau sends Hafte Sorvalh to defuse a dangerous dispute. Her diplomatic assignment must overcome that hostility before the crisis hardens into a war neither side can safely fight.

Synopsis source: John Scalzi (opens in a new tab)