“President Kennedy faced a foe more relentless than Khrushchev, just across the Potomac: the bellicose Joint Chiefs of Staff argued for the deployment of nuclear weapons and kept pressing to invade Cuba. Kennedy’s success in fending them off may have been his most consequential victory.”
From JFK vs. the Military
President John F. Kennedy was one of the youngest US Presidents – he was only 43 when he took the oath in 1961. He was also one of the youngest senators in the 1950s. He never held any executive office before he became President.
Contrast it with his predecessor – President Dwight Eisenhower. He had been a five-star general in the US Army during WWII, Supreme commander of Allied forces in Europe and head of US Army before he became President. He was a WWII hero. He was President for 8 years. He was known to be a strong leader, ready to show military muscle as and when required and known for being the tough guy.