A terrific book - the authors present a solid package: the mental and emotional processes involved in cognitive dissonance, and the processes that make it harder and harder to change our minds and public positions the more invested we are in the ones we've chosen; then examples in a number of fields of the ways it plays out, with the sometimes merely embarrassing and sometimes tragic results. The examples are spread among many areas of life and culture from personal relationships to criminal prosecutions to religion to politics to warfare. It's also often hilarious.
This book should be read not only by the president, all members of his cabinet, and all members of Congress, but also by every prosecutor, every general and admiral in the military, and every mental health professional.