In the distant future, the two major political powers on Earth consist of Soviet North America and the Argentinian-South African coalition (aka the South Atlantic Axis). The uneasy truce between them is shattered when the planet is destroyed in a nuclear holocaust.
The surviving colonies on the moon and Mars—both led by militant dictators—continue waging war on one another for dominance over what remains of the human race.
Assuming leadership of the moon colonies by killing or imprisoning his enemies, Colonel Scone of Soviet North America sends his most loyal ally—and romantic rival—Doctor Broward to the ruined Earth to retrieve a planet-busting bomb from a secret location beneath the ocean.
From there, the doctor is ordered to Mars to release the bomb and destroy the Argentinian colonies ruled by the brutal General Howards, but during his journey, Broward forms a different plan…
All told, Tongues of the Moon was little more than a space adventure story with two-dimensional characters and a simple, uncomplicated plot. Nevertheless, it was a fun, fast read.
I read this collection of 27 speculative fiction tales immediately after 
One of Jack Vance’s most influential works and the first in a series, The Dying Earth is comprised of six fantasy adventures that are tangentially connected. They take place in Earth’s far future, during a time when the sun is approaching the end of its life and has become, it seems, a red dwarf. The human population has diminished significantly and most of the planet’s history long forgotten.
Perhaps the last remnants of the human race eke out a meager existence on the unforgiving world of Aerlith, on which much of the terrain is little more than a craggy, mountainous wasteland. The two major and opposing settlements on Aerlith are concentrated in two valleys, each containing the only fertile soil on the planet. These forces are led by the cunning and logical Joaz Banbeck and capricious, volatile Ervis Carcolo, respectively. Carcolo, ruler of Happy Valley, is intent on destroying Banbeck and laying claim to his territory, known as Banbeck Vale.
What began as a human refugee camp on the Earth-like world of Pangborn 1,600 years ago has long since evolved into a global colony. Most of the planet is ruled by Lord Faide. His only remaining opponent is Lord Ballant. On the eve of war, Faide and his troops march to invade Ballant’s kingdom. However, their way is obstructed by a forest, recently planted by the First Folk, Pangborn’s indigenous people.
In this fourth and final installment of Jack Vance’s Planet of Adventure series, astronaut Adam Reith is nearly finished construction on a spaceship that will allow him to escape the dangerous world of Tschai and return to Earth. It has been at least a year since Reith crash landed on the planet when his scout ship was shot down while attempting to land.