The Stormlight Archive Tome 3
Oathbringer

From fantasy sensation Brandon Sanderson, leap back into a fantasy world like no other, with the breathtaking adventure that is Book Three of the Stormlight Archive. Speak again the ancient oaths : Life before death. Strength before weakness. Journey before destination. And return to men the Shards they once bore. The Knights Radiant must stand again. Roshar has become a bitter battleground, and now a terrible victory has unleased a storm that will ravage the world, leaving new enemies in its wake.
As one Knight Radiant comes to realise his foe's anger may be justified, another uncovers long-hidden dark secrets. But unless the nations of Roshar can unite behind - and forgive - a blood-soaked warleader, it will all be for nothing ... and even if they can, their civilisation remains in danger...