'A training manual for our troubled times ... It makes sense of our world, but is also capable of beautifully crafted pithy historical judgements. ... It is a book that cares about liberty, choice and a moral compass, that warns against hubris' Roger Boyes, The TimesJohn Lewis Gaddis, the distinguished historian and acclaimed author of The Cold War, has for almost two decades co-taught the grand strategy seminar at Yale University with his colleagues Charles Hill and Paul Kennedy. Now, in On Gra..