The Stormlight Archive Tome 4
Rhythm of War. Part Two

This volume is the second half of the novel Rythm of War. Dalinar Kholin and his Knights Radiant have spent a year fighting a protracted, brutal war inn which neither side has gained an advantage, and the threat of a betrayal by Dalinar's crafty ally Taravangian looms over every strategic move. Now, as new technological discoveries by Navani Kholin's scholars begin to change the face of the war, the enemy prepares to strike back, and the arms race that follows will challenge the very core of the Radiant ideals.
It may even reveal the secrets of the ancient tower that was once the heart of their strength.