According to David McCullough, what was Harry Truman’s greatest challenges when he assumed the presidency upon the death of FDR? How well did Truman meet these challenges? What were his greatest mistakes?

According to David McCullough, what was Harry Truman’s greatest challenges when he assumed the presidency upon the death of FDR? How well did Truman meet these challenges? What were his greatest mistakes? What were his greatest accomplishments?  According to  Michael R. Dobbs, what were the contrasting styles of Eisenhower and Kennedy? Describe the challenges of the Cuban Missile Crisis as faced by JFK as president. What was “brinkmanship,” especially as it pertains to the Cuban Missile Crisis? Do you agree with Kennedy’s supporters that he “saved the world” in his handling of the Cuban Missile Crisis? Why or why not.