Donald Barr's Space Relations is a character-driven space opera from 1975. Despite the seemingly-humorous subtitle, it is a deadly earnest novel that attempts to tackle weighty issues with ostentatiously "literary" prose.

It tells the story of John Craig, the ambassador from Earth to the planet Kossar. Craig represents an intergalactic human empire, currently at war with a sinister bug people. Kossar, although human, is not part of the empire - mostly because the ruling aristocrats refuse to abolish the slave trade that is the foundation of their class system and economy.

The narrative is split in two. Initially (and ultimately) it tells the story of Craig's official visit to Kossar. In between, it recounts Craig's previous visit to the planet - two years spent as a slave of the fulsome Lady Morgan.

The war with the bug aliens is, although occasionally referenced, merely a MacGuffin to make Kossar (otherwise a backwater world in dire need of sterilization) important. Similarly, the complex, Machiavellian politics of the future - both in Kossar and on Earth - are often, tantalizingly, cited, but never fully explored.