Final answer:
John F. Kennedy's shortcomings included limited self-confidence, reliance on academics, cosmetic glamour, reluctance to discuss foreign affairs, and a refusal to perceive communism as a threat.
Step-by-step explanation:
Among John F. Kennedy's shortcomings were limited outward self-confidence and a lack of conviction, his reliance on the guidance of academics, and the fact that much of the glamour surrounding him was cosmetic.
Additionally, Kennedy was reluctant to breach the topic of foreign affairs in public speeches and refused to perceive communism as a threat early in his term.