"As Eisenhower ushered Kennedy out of the White House after three hours and forty minutes, Kennedy asked if he might call on Eisenhower in the future if he needed advice. Of course, Ike said. In reality, Ike wasn't thinking about retirement. His heart was pumping as he walked back to his office. He had six weeks to make his final move. Ike intended to close out his presidency with a world-changing message. Rather than going meekly into the night,...