Calling on history, cutting-edge research, complexity science and even The Lord of the Rings, renowned thought leader Thomas Homer-Dixon lays out the tools we can command to rescue a world on the brink.For three decades, Thomas Homer-Dixon, author of The Ingenuity Gap and The Upside of Down, has examined the threats to our future security—predicting a deteriorating global environment, extreme economic stresses, mass migrations, social instability and wide political violence i