This book re-evaluates the legacy of John F. Kennedy by synthesizing decades of historical scholarship and O'Brien's own extensive research. Michael O'Brien, a preeminent Kennedy historian, distills his comprehensive biography into a focused examination of the 35th U.S. President. The work delves into the formative influences on Kennedy, including his family, his personal health struggles, and his wartime experiences, before analyzing the critical decisions and domestic policies of his presidency. It offers considered interpretations of pivotal events such as the Bay of Pigs invasion and the Cuban Missile Crisis, alongside his stances on civil rights and economic matters.

The Authority Perspective: Michael O'Brien's "Rethinking Kennedy" is recognized as a significant contribution to the ongoing re-evaluation of John F. Kennedy's presidency. By integrating his own deep scholarship with subsequent historical analyses, O'Brien provides a nuanced perspective that moves beyond initial hagiography. The book is noted for its balanced approach, addressing both the triumphs and complexities of Kennedy's life and time in office. It serves as a valuable resource for understanding the evolving historical consensus on one of America's most scrutinized presidents.