What did Andrew Bacevich label the book referenced by Necessary Illusions?
Necessary Illusions:  The title of this book borrows a phrase from the writings of Reinhold Niebuhr. Reinhold Niebuhr:  Andrew Bacevich labelled Niebuhr's book "The Irony of American History" "the most important book ever written on U.S. foreign policy."
The Irony of American History