The Gamble tells the gripping story of how, in the Iraq War's darkest hour, an unlikely collection of dissident generals, scholars and foreign experts pulled the country back from the edge of the abyss and saved countless lives. This was 'the surge', and at its helm was General David Petraeus, now acknowledged as one of the greatest military tacticians in US history. Based on unprecedented access to the entire chain of army command - at the top and fighting on the ground - this is the definitive account of one of America's biggest ever military gambles, and what it means for the future of Iraq.