I am nearing the end of the chapters comprising the original edition of Richard Neustadt's Presidential Power and the Modern Presidents (originally focused on the presidencies of Truman and Eisenhower, later much expanded). The original edition is in large part a close study of two failures in presidential decision-making: Truman letting his policy in Korea be shaped by MacArthur's military overreach, and Eisenhower failing to resolve internal splits in his administration over budget policy, and therefore appearing several times over the course of a year to contradict his own prior policies and pronouncements.