Journalist Thanassis Cambanis discusses his new book Once Upon A Revolution: An Egyptian Story, about the 2011 Egyptian revolution.The book tells the story of two men from starkly different backgrounds, one an apolitical middle-class architect, the other a contrarian Muslim Brother, who were each determined in their own way to topple a dictator and re-invent a nation. Cambanis writes the “Internationalist” column for the Boston Globe and regularly contributes to the New York Times.